Derivative Financial Instruments - Summary of Interest Rate Hedge Balances (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Mark-to-market derivative liabilities (noncurrent liabilities)	$ 80	$ 106
Mark-to-market derivative liabilities (current liabilities)	29	74
Interest Rate Contract
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Other deferred debits (noncurrent assets)	2
Other current assets		12
Total derivative assets	2	12
Mark-to-market derivative liabilities (noncurrent liabilities)	1
Mark-to-market derivative liabilities (current liabilities)		46
Total mark-to-market derivative liabilities	(1)	(46)
Total mark-to-market derivative net assets	1	(34)
Interest Rate Contract | Derivatives Designated as Hedging Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Other deferred debits (noncurrent assets)	2
Other current assets		11
Total derivative assets	2	11
Mark-to-market derivative liabilities (noncurrent liabilities)	1
Mark-to-market derivative liabilities (current liabilities)		24
Total mark-to-market derivative liabilities	(1)	(24)
Total mark-to-market derivative net assets	1	(13)
Interest Rate Contract | Economic Hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Other deferred debits (noncurrent assets)	0
Other current assets		1
Total derivative assets	0	1
Mark-to-market derivative liabilities (noncurrent liabilities)	0
Mark-to-market derivative liabilities (current liabilities)		22
Total mark-to-market derivative liabilities	0	(22)
Total mark-to-market derivative net assets	$ 0	$ (21)