Annual report pursuant to Section 13 and 15(d)

Debt - CCH Working Capital Facility (Details)

v3.19.3.a.u2
Debt - CCH Working Capital Facility (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Jun. 30, 2018
Jun. 01, 2018
CCH Working Capital Facility [Member]        
Line of Credit Facility [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity $ 1,200,000,000.0      
Debt Instrument, Description of Variable Rate Basis LIBOR or base rate      
Maturity date Jun. 29, 2023      
CCH Working Capital Facility [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 1.25%      
CCH Working Capital Facility [Member] | Minimum [Member] | Base Rate [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 0.25%      
CCH Working Capital Facility [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 1.75%      
CCH Working Capital Facility [Member] | Maximum [Member] | Base Rate [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 0.75%      
CCH [Member] | CCH Working Capital Facility [Member]        
Line of Credit Facility [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity     $ 1,200,000,000 $ 350,000,000
Debt Issuance Costs, Required Fees to Agents and Lenders   $ 14,000,000    
Maturity date Jun. 29, 2023      
CCH [Member] | CCH Letter of Credit [Member] | Portion issued and not drawn [Member]        
Line of Credit Facility [Line Items]        
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.20%      
CCH [Member] | CCH Revolving Loans [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Description of Variable Rate Basis LIBOR or the base rate      
Line Of Credit Facility, Unused Capacity, Commitment Fee Percentage Of Margin On Undrawn Commitment 40.00%      
Line of Credit Facility, Number of Business Days Notice Required for Repayment of Debt Without Penalty 3 days      
CCH [Member] | CCH Revolving Loans [Member] | Base Rate Determination Federal Funds Rate [Member] | Base Rate [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 0.50%      
CCH [Member] | CCH Revolving Loans [Member] | Base Rate Determination LIBOR [Member] | Base Rate [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 0.50%      
CCH [Member] | CCH Revolving Loans [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 1.25%      
CCH [Member] | CCH Revolving Loans [Member] | Minimum [Member] | Base Rate [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 0.25%      
CCH [Member] | CCH Revolving Loans [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 1.75%      
CCH [Member] | CCH Revolving Loans [Member] | Maximum [Member] | Base Rate [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 0.75%      
CCH [Member] | CCH LC Loan [Member] | Base Rate [Member] | Drawn Portion [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 2.00%      
CCH [Member] | CCH LC Loan [Member] | Maximum [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Term 1 year      
CCH [Member] | CCH Working Capital Loan [Member]        
Line of Credit Facility [Line Items]        
Line of Credit Facility, Annual Temporary Requirement, Balance, Outstanding Principal $ 0      
Line of Credit Facility, Annual Temporary Requirement, Period, Number of Consecutive Business Days 5 days