| Schedule I - Condensed Financial Information of Registrant - Footnotes (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | ||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Long-Term Debt, Net | $ 30,471 | $ 30,774 | |||||||||||||||||||
| Current debt | 372 | 0 | |||||||||||||||||||
| Debt, Long-term and Short-term, Combined Amount | 30,843 | 30,774 | |||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| 2021 | 747 | ||||||||||||||||||||
| 2022 | 1,089 | ||||||||||||||||||||
| 2023 | 1,749 | ||||||||||||||||||||
| 2024 | 5,556 | ||||||||||||||||||||
| 2025 | 5,023 | ||||||||||||||||||||
| Thereafter | 17,323 | ||||||||||||||||||||
| Total | 31,487 | ||||||||||||||||||||
| Proceeds from issuances of debt | 7,547 | ||||||||||||||||||||
| Repayments of Debt | 7,708 | ||||||||||||||||||||
| Debt modification and extinguishment costs | (217) | (55) | $ (27) | ||||||||||||||||||
| Operating lease assets, net | 759 | 439 | |||||||||||||||||||
| Current operating lease liabilities | 161 | 236 | |||||||||||||||||||
| Non-current operating lease liabilities | 597 | $ 189 | |||||||||||||||||||
| Operating Lease, Liability | [1] | 758 | |||||||||||||||||||
| Operating Leases, Future Minimum Payments | |||||||||||||||||||||
| 2022 | [1] | 156 | |||||||||||||||||||
| 2023 | [1] | 121 | |||||||||||||||||||
| 2024 | [1] | 119 | |||||||||||||||||||
| 2025 | [1] | 96 | |||||||||||||||||||
| Thereafter | [1] | 252 | |||||||||||||||||||
| Total lease payments | [1] | 941 | |||||||||||||||||||
| Less: Interest | [1] | $ (183) | |||||||||||||||||||
| Weighted-average remaining lease term | 8 years 2 months 12 days | 8 years 4 months 24 days | |||||||||||||||||||
| Weighted-average discount rate | [2] | 5.40% | 5.20% | ||||||||||||||||||
| Operating cash flows from operating leases | $ 309 | $ 389 | |||||||||||||||||||
| Right-of-use assets obtained in exchange for new operating lease liabilities | $ 615 | 235 | |||||||||||||||||||
| Stock Repurchase Program, Period in Force | 3 years | ||||||||||||||||||||
| Stock Repurchase Program, Authorized Amount | $ 1,000 | ||||||||||||||||||||
| Total amount paid (in millions) | 155 | 249 | 0 | ||||||||||||||||||
| Supplemental Cash Flow Information [Abstract] | |||||||||||||||||||||
| Cash paid during the period for interest on debt, net of amounts capitalized | 1,395 | 1,126 | 707 | ||||||||||||||||||
| Non-cash investing and financing activities: | |||||||||||||||||||||
| Additional interest in Cheniere Holdings acquired | 0 | 0 | 702 | ||||||||||||||||||
| Long-term Debt [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Unamortized premium, discount and debt issuance costs, net | $ (641) | (692) | |||||||||||||||||||
| 2021 Cheniere Convertible Unsecured Notes [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | [3] | 4.875% | |||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Aggregate principal amount | [3] | $ 1,000 | |||||||||||||||||||
| Repayments of Convertible Debt | $ (844) | $ (844) | [3] | ||||||||||||||||||
| Debt Instrument, Convertible, Conversion Price | $ 93.64 | ||||||||||||||||||||
| Current Debt [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Unamortized premium, discount and debt issuance costs, net | $ (3) | 0 | |||||||||||||||||||
| Cheniere Term Loan Facility [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Long-term Debt, Gross | [4] | 148 | |||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Repayments of Debt | 2,100 | ||||||||||||||||||||
| Debt modification and extinguishment costs | 16 | ||||||||||||||||||||
| Line Of Credit Facility, Original Borrowing Capacity | [4] | 2,620 | |||||||||||||||||||
| Line of Credit Facility, Maximum Borrowing Capacity | 2,695 | ||||||||||||||||||||
| Cheniere Term Loan Facility [Member] | Cash [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Repayments of Debt | 200 | ||||||||||||||||||||
| Cheniere Revolving Credit Facility [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Long-term Debt, Gross | 0 | ||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Line Of Credit Facility, Original Borrowing Capacity | 750 | ||||||||||||||||||||
| 2025 CCH HoldCo II Convertible Notes and 2021 Cheniere Convertible Notes [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Debt modification and extinguishment costs | 149 | ||||||||||||||||||||
| Debt Conversion, Reduction in Equity | $ 10 | ||||||||||||||||||||
| 2025 CCH HoldCo II Convertible Notes [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Debt Instrument, Convertible, Conversion Price | $ 1,080 | ||||||||||||||||||||
| 2025 CCH HoldCo II Convertible Notes [Member] | Cash [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Repayments of Debt | $ 300 | ||||||||||||||||||||
| Operating lease assets, net [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Operating lease assets, net | 759 | 439 | |||||||||||||||||||
| Current operating lease liabilities [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Current operating lease liabilities | 161 | 236 | |||||||||||||||||||
| Non-current operating lease liabilities [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Non-current operating lease liabilities | 597 | 189 | |||||||||||||||||||
| Parent Company [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Long-term Debt, Gross | 3,145 | 1,903 | |||||||||||||||||||
| Long-Term Debt, Net | 2,790 | 1,534 | |||||||||||||||||||
| Current debt | 103 | 0 | |||||||||||||||||||
| Debt, Long-term and Short-term, Combined Amount | 2,893 | 1,534 | |||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| 2021 | 476 | ||||||||||||||||||||
| 2022 | 0 | ||||||||||||||||||||
| 2023 | 148 | ||||||||||||||||||||
| 2024 | 0 | ||||||||||||||||||||
| 2025 | 0 | ||||||||||||||||||||
| Thereafter | 2,625 | ||||||||||||||||||||
| Total | 3,249 | ||||||||||||||||||||
| Proceeds from issuances of debt | 4,778 | ||||||||||||||||||||
| Repayments of Debt | (3,474) | ||||||||||||||||||||
| Debt modification and extinguishment costs | (50) | 0 | 0 | ||||||||||||||||||
| Guarantor Obligations, Maximum Exposure | 542 | ||||||||||||||||||||
| Guarantor Obligations, Current Carrying Value | 0 | ||||||||||||||||||||
| Operating lease assets, net | 22 | 24 | |||||||||||||||||||
| Current operating lease liabilities | 5 | 5 | |||||||||||||||||||
| Non-current operating lease liabilities | 30 | 33 | |||||||||||||||||||
| Operating Lease, Liability | 35 | 38 | |||||||||||||||||||
| Operating lease cost | [5] | 10 | 9 | ||||||||||||||||||
| Variable lease costs paid to the lessor | 4 | $ 3 | |||||||||||||||||||
| Operating Leases, Future Minimum Payments | |||||||||||||||||||||
| 2021 | 7 | ||||||||||||||||||||
| 2022 | 8 | ||||||||||||||||||||
| 2023 | 8 | ||||||||||||||||||||
| 2024 | 7 | ||||||||||||||||||||
| 2025 | 6 | ||||||||||||||||||||
| Thereafter | 7 | ||||||||||||||||||||
| Total lease payments | 43 | ||||||||||||||||||||
| Less: Interest | $ (8) | ||||||||||||||||||||
| Weighted-average remaining lease term | 5 years 8 months 12 days | 6 years 7 months 6 days | |||||||||||||||||||
| Weighted-average discount rate | 6.60% | 5.50% | |||||||||||||||||||
| Operating cash flows from operating leases | $ 7 | $ 7 | |||||||||||||||||||
| Right-of-use assets obtained in exchange for new operating lease liabilities | $ 5 | $ 1 | |||||||||||||||||||
| Stock Repurchase Program, Period in Force | 3 years | ||||||||||||||||||||
| Stock Repurchase Program, Authorized Amount | $ 1,000 | ||||||||||||||||||||
| Aggregate common stock repurchased | 2,875,376 | 4,000,424 | |||||||||||||||||||
| Weighted average price paid per share | $ 53.88 | $ 62.27 | |||||||||||||||||||
| Total amount paid (in millions) | $ 155 | $ 249 | 0 | ||||||||||||||||||
| Stock Repurchase Program, Remaining Authorized Repurchase Amount | 596 | ||||||||||||||||||||
| Supplemental Cash Flow Information [Abstract] | |||||||||||||||||||||
| Cash paid during the period for interest on debt, net of amounts capitalized | 45 | 36 | 32 | ||||||||||||||||||
| Non-cash investing and financing activities: | |||||||||||||||||||||
| Non-cash capital distribution (contributions) | [6] | 79 | 490 | 607 | |||||||||||||||||
| Additional interest in Cheniere Holdings acquired | $ 0 | 0 | $ 702 | ||||||||||||||||||
| Parent Company [Member] | 2028 Cheniere Senior Secured Notes [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 4.625% | ||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Aggregate principal amount | [7],[8] | $ 2,000 | |||||||||||||||||||
| Parent Company [Member] | Long-term Debt [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Unamortized premium, discount and debt issuance costs, net | (355) | (369) | |||||||||||||||||||
| Parent Company [Member] | 2021 Cheniere Convertible Unsecured Notes [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Current debt | $ 104 | 0 | |||||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 4.875% | ||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Repayments of Convertible Debt | [7] | $ (844) | |||||||||||||||||||
| Repayments of Debt | [8] | 844 | |||||||||||||||||||
| Parent Company [Member] | Current Debt [Member] | |||||||||||||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||||||||||||
| Unamortized premium, discount and debt issuance costs, net | (1) | 0 | |||||||||||||||||||
| Parent Company [Member] | Cheniere Term Loan Facility [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Proceeds from issuances of debt | 2,323 | ||||||||||||||||||||
| Repayments of Lines of Credit | [7] | (2,175) | |||||||||||||||||||
| Repayments of Debt | [8] | 2,175 | |||||||||||||||||||
| Parent Company [Member] | Cheniere Revolving Credit Facility [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Proceeds from issuances of debt | 455 | ||||||||||||||||||||
| Repayments of Lines of Credit | (455) | ||||||||||||||||||||
| Repayments of Debt | 455 | ||||||||||||||||||||
| Parent Company [Member] | Operating lease assets, net [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Operating lease assets, net | 22 | 24 | |||||||||||||||||||
| Parent Company [Member] | Current operating lease liabilities [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Current operating lease liabilities | 5 | 5 | |||||||||||||||||||
| Parent Company [Member] | Non-current operating lease liabilities [Member] | |||||||||||||||||||||
| Long-term Debt, Fiscal Year Maturity [Abstract] | |||||||||||||||||||||
| Non-current operating lease liabilities | $ 30 | $ 33 | |||||||||||||||||||
| 
 | |||||||||||||||||||||