| Debt - Schedule of Issuances and Repayments (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 | ||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Proceeds from issuances of debt | $ 7,547 | ||||||||||||||||
| Repayments of Debt | (7,708) | ||||||||||||||||
| Debt modification and extinguishment costs | (217) | $ (55) | $ (27) | ||||||||||||||
| Cheniere Term Loan Facility [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Repayments of Debt | (2,100) | ||||||||||||||||
| Debt modification and extinguishment costs | 16 | ||||||||||||||||
| Line Of Credit Facility, Original Borrowing Capacity | [1] | 2,620 | |||||||||||||||
| Line of Credit Facility, Maximum Borrowing Capacity | 2,695 | ||||||||||||||||
| Cheniere Term Loan Facility [Member] | Cash [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Repayments of Debt | (200) | ||||||||||||||||
| Cheniere Revolving Credit Facility [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Line Of Credit Facility, Original Borrowing Capacity | 750 | ||||||||||||||||
| 2025 CCH HoldCo II Convertible Notes and 2021 Cheniere Convertible Notes [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt modification and extinguishment costs | 149 | ||||||||||||||||
| Debt Conversion, Reduction in Equity | $ 10 | ||||||||||||||||
| 2025 CCH HoldCo II Convertible Notes [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt Instrument, Convertible, Conversion Price | $ 1,080 | ||||||||||||||||
| 2025 CCH HoldCo II Convertible Notes [Member] | Cash [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Repayments of Debt | $ (300) | ||||||||||||||||
| 2021 Cheniere Convertible Unsecured Notes [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | [2] | 4.875% | |||||||||||||||
| Aggregate principal amount | [2] | $ 1,000 | |||||||||||||||
| Debt Instrument, Convertible, Conversion Price | $ 93.64 | ||||||||||||||||
| Repayments of Convertible Debt | $ 844 | $ 844 | [2] | ||||||||||||||
| SPL [Member] | 2030 SPL Senior Notes [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 4.50% | ||||||||||||||||
| Aggregate principal amount | [3] | $ 2,000 | |||||||||||||||
| Debt modification and extinguishment costs | $ 43 | ||||||||||||||||
| SPL [Member] | 2021 SPL Senior Notes | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 5.625% | ||||||||||||||||
| Repayments of Debt | [3] | $ (2,000) | |||||||||||||||
| CCH Holdco II [Member] | 2025 CCH HoldCo II Convertible Notes [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 11.00% | ||||||||||||||||
| Repayments of Debt | [4] | $ (1,578) | |||||||||||||||
| CCH [Member] | 3.52% CCH Senior Secured Notes [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 3.52% | ||||||||||||||||
| Aggregate principal amount | [5] | $ 769 | |||||||||||||||
| Debt modification and extinguishment costs | 9 | ||||||||||||||||
| CCH [Member] | CCH Credit Facility | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Repayments of Debt | [5] | (656) | |||||||||||||||
| Cheniere [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Proceeds from issuances of debt | 4,778 | ||||||||||||||||
| Repayments of Debt | 3,474 | ||||||||||||||||
| Debt modification and extinguishment costs | $ (50) | $ 0 | $ 0 | ||||||||||||||
| Cheniere [Member] | 2028 Cheniere Senior Secured Notes [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 4.625% | ||||||||||||||||
| Aggregate principal amount | [4],[6] | $ 2,000 | |||||||||||||||
| Cheniere [Member] | Cheniere Term Loan Facility [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Proceeds from issuances of debt | 2,323 | ||||||||||||||||
| Repayments of Debt | [4] | (2,175) | |||||||||||||||
| Cheniere [Member] | Cheniere Revolving Credit Facility [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Proceeds from issuances of debt | 455 | ||||||||||||||||
| Repayments of Debt | $ (455) | ||||||||||||||||
| Cheniere [Member] | 2021 Cheniere Convertible Unsecured Notes [Member] | |||||||||||||||||
| Debt Instrument [Line Items] | |||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 4.875% | ||||||||||||||||
| Repayments of Debt | [4] | $ (844) | |||||||||||||||
| Repayments of Convertible Debt | [6] | $ 844 | |||||||||||||||
| 
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