Debt and Credit Agreements - Narrative (Details)	1 Months Ended	3 Months Ended				6 Months Ended	9 Months Ended	12 Months Ended
	Feb. 12, 2025 USD ($) swap	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($) swap	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($) swap	Jun. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)		Dec. 31, 2023 USD ($)		Dec. 31, 2022 USD ($)		Sep. 18, 2024 USD ($)	Jul. 31, 2022 USD ($)
Debt Instrument [Line Items]
Other operating activities		$ (16,000,000)		$ (35,000,000)		$ 18,000,000	$ 67,000,000	$ (64,000,000)	[1]	$ (7,000,000)	[1]	$ (16,000,000)	[1]
Commercial Paper
Debt Instrument [Line Items]
Line of credit facility capacity								1,000,000,000.0
Line of credit facility, amount outstanding								0
2023 Fixed-to-Floating Interest Rate Swaps | Fair Value Hedging
Debt Instrument [Line Items]
Derivative, number of fair value hedges | swap			2
Derivative, term of contract			10 years
2023 Fixed-to-Floating Interest Rate Swaps | Fair Value Hedging | Subsequent Event
Debt Instrument [Line Items]
Derivative, number of fair value hedges | swap	2
Derivative, term of contract	10 years
2023 Fixed-to-Floating Interest Rate Swaps | Fair Value Hedging | Designated as Hedging Instrument
Debt Instrument [Line Items]
Interest rate fair value hedge asset at fair value			$ 19,000,000					7,000,000		19,000,000
2023 Fixed-to-Floating Interest Rate Swaps | Fair Value Hedging | Designated as Hedging Instrument | Subsequent Event
Debt Instrument [Line Items]
Interest rate fair value hedge asset at fair value	$ 0
2022 Fixed-to-Floating Interest Rate Swap | Fair Value Hedging
Debt Instrument [Line Items]
Derivative, number of fair value hedges | swap					5
Derivative, term of contract					10 years
2022 Fixed-to-Floating Interest Rate Swap | Fair Value Hedging | Designated as Hedging Instrument
Debt Instrument [Line Items]
Interest rate fair value hedge liability at fair value			107,000,000					123,000,000		107,000,000
Interest Rate Swap | Cash Flow Hedging | Designated as Hedging Instrument
Debt Instrument [Line Items]
Derivative asset, notional value			114,000,000					500,000,000		114,000,000		500,000,000
Notional amount settled								114,000,000		226,000,000		160,000,000
Other operating activities								52,000,000		95,000,000		$ 52,000,000
Cash flow hedge derivative instrument assets at fair value			48,000,000							48,000,000
4.90% Notes Due 2055
Debt Instrument [Line Items]
Notional value of hedged notes														$ 550,000,000
Interest rate														4.90%
4.90% Notes Due 2055 | Subsequent Event
Debt Instrument [Line Items]
Notional value of hedged notes	$ 250,000,000
5.2% Notes Due 2033
Debt Instrument [Line Items]
Notional value of hedged notes							$ 600,000,000
Interest rate							5.20%
4.1% Notes Due 2032
Debt Instrument [Line Items]
Notional value of hedged notes															$ 950,000,000
Interest rate															4.10%
4.5% Notes Due 2052
Debt Instrument [Line Items]
Notional value of hedged notes															$ 900,000,000
Interest rate															4.50%
4.65% Notes Due 2068
Debt Instrument [Line Items]
Notional value of hedged notes															$ 150,000,000
Interest rate															4.65%
Fixed Rate Notes Due 2033
Debt Instrument [Line Items]
Notional value of hedged notes			250,000,000							250,000,000
Fixed Rate Notes Due Between 2036 and 2040
Debt Instrument [Line Items]
Notional value of hedged notes			$ 1,050,000,000		$ 800,000,000			1,050,000,000		$ 1,050,000,000
3.25% Notes Due 2027
Debt Instrument [Line Items]
Notional value of hedged notes								$ 850,000,000
Interest rate								3.25%
Unsecured Revolving Credit Facility Due 2028 | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility capacity								$ 1,200,000,000
Line of credit facility, amount outstanding								$ 0

[1] See Note 20, Revision of Prior Period Financial Statements.