Derivative Financial Instruments - Summary of Interest Rate Hedge Balances (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Mark-to-market derivative liabilities (current liabilities)	$ (74)	$ (8)
Mark-to-market derivative liabilities (noncurrent liabilities)	(106)	(83)
Total mark-to-market derivative net liabilities	51	11
Interest Rate Contract
Derivative [Line Items]
Other current assets	12
Other deferred debits (noncurrent assets)	0	11
Total derivative assets	12	11
Mark-to-market derivative liabilities (current liabilities)	(46)	(3)
Mark-to-market derivative liabilities (noncurrent liabilities)		(4)
Total mark-to-market derivative liabilities	(46)	(7)
Total mark-to-market derivative net liabilities	(34)	4
Interest Rate Contract | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Other current assets	11
Other deferred debits (noncurrent assets)	0	6
Total derivative assets	11	6
Mark-to-market derivative liabilities (current liabilities)	(24)	0
Mark-to-market derivative liabilities (noncurrent liabilities)		(4)
Total mark-to-market derivative liabilities	(24)	(4)
Total mark-to-market derivative net liabilities	(13)	2
Interest Rate Contract | Not Designated as Hedging Instrument
Derivative [Line Items]
Other current assets	1
Other deferred debits (noncurrent assets)	0	5
Total derivative assets	1	5
Mark-to-market derivative liabilities (current liabilities)	(22)	(3)
Mark-to-market derivative liabilities (noncurrent liabilities)		0
Total mark-to-market derivative liabilities	(22)	(3)
Total mark-to-market derivative net liabilities	$ (21)	$ 2