Derivative Instruments - Schedule of Notional Amounts of Outstanding Derivative Positions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
CCH Interest Rate Derivatives [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 4,700	$ 4,500
Effective Date	May 20, 2015
Maturity Date	May 31, 2022
Weighted Average Fixed Interest Rate Paid	2.30%
CCH Interest Rate Forward Start Derivatives [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 750	$ 750
Effective Date	Sep. 30, 2020
Maturity Date	Dec. 31, 2030
Weighted Average Fixed Interest Rate Paid	2.06%