Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Apr. 27, 2022
Debt Instrument [Line Items]
Long-term debt	$ 7,541	$ 7,636
Long-term Debt and Lease Obligation, Including Current Maturities	7,160	7,636
Unamortized debt issuance costs and discounts	$ (62)	(68)
Debt instrument call feature description	We may redeem all of our senior notes from time to time or all of the notes of each series at any time at the applicable redemption prices, plus accrued and unpaid interest.
Gain (Loss) on Extinguishment of Debt	$ 0	0	$ (42)
Long-term Line of Credit				$ 3,500
Long-Term Debt, Maturity, Year One	381
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	90
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities Repayments of Principal in Year Five	0
Short-term borrowings and current maturities of long-term debt	381	0
Senior notes due November 2045
Debt Instrument [Line Items]
Long-term debt	1,887	1,911
Debt Instrument, Repurchase Amount	24	90
Senior notes due March 2030
Debt Instrument [Line Items]
Long-term debt	1,000	1,000
Senior Notes due November 2035
Debt Instrument [Line Items]
Long-term debt	997	1,000
Debt Instrument, Repurchase Amount	3	0
Senior notes due September 2039
Debt Instrument [Line Items]
Long-term debt	938	946
Debt Instrument, Repurchase Amount	8	54
Senior notes due August 2043
Debt Instrument [Line Items]
Long-term debt	846	879
Debt Instrument, Repurchase Amount	32	21
Senior notes due September 2038
Debt Instrument [Line Items]
Long-term debt	763	763
Debt Instrument, Repurchase Amount	0	37
Senior notes due November 2041
Debt Instrument [Line Items]
Long-term debt	469	500
Debt Instrument, Repurchase Amount	31	0
Senior debentures due August 2096
Debt Instrument [Line Items]
Long-term debt	$ 226	228
Debt instruments non-call feature description	may not be redeemed prior to maturity
Debt Instrument, Repurchase Amount	$ 2	66
Senior notes due February 2027
Debt Instrument [Line Items]
Long-term debt	90	90
Debt Instrument, Repurchase Amount	0	14
Senior Notes due November 2025
Debt Instrument [Line Items]
Long-term debt	$ 0	382
Interest rate (in hundredths)	3.80%		3.80%
Debt Instrument, Repurchase Amount	$ 0	18
Early Repayment of Senior Debt			$ 600
Repayments of Senior Debt			$ 641
Other Debt Obligations
Debt Instrument [Line Items]
Long-term debt	$ 6	5
Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate (in hundredths)	6.75%
Senior Notes due 2096
Debt Instrument [Line Items]
Interest rate (in hundredths)	7.60%
Senior & Medium Term Notes due with Various Maturity Dates
Debt Instrument [Line Items]
Debt Instrument, Repurchase Amount	$ 100	$ 300
Outstanding balance of Senior Notes due Various Dates
Debt Instrument [Line Items]
Long-term debt	6,600
Outstanding balance of Senior Notes due November 2025
Debt Instrument [Line Items]
Long-term debt	$ 382