Debt and Credit Agreements - Schedule of Debt (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt	$ 2,075,000,000	$ 2,075,000,000
Unamortized debt premium	96,000,000	111,000,000
Unamortized debt issuance costs	(4,000,000)	(5,000,000)
Long-term debt	2,167,000,000	2,181,000,000
Less: current portion of long-term debt	575,000,000	0
Long-term debt	1,592,000,000	2,181,000,000
Carrying Amount
Debt Instrument [Line Items]
Long-term debt	2,167,000,000	2,181,000,000
Less: current portion of long-term debt	575,000,000	0
Long-term debt	$ 1,592,000,000	2,181,000,000
3.90% senior notes due May 15, 2027
Debt Instrument [Line Items]
Stated percentage	3.90%
4.375% senior notes due March 15, 2029
Debt Instrument [Line Items]
Stated percentage	4.375%
Senior Notes | 3.65% weighted-average private placement senior notes
Debt Instrument [Line Items]
Weighted average interest rate	3.65%
Total debt	$ 825,000,000	825,000,000
Senior Notes | 3.90% senior notes due May 15, 2027
Debt Instrument [Line Items]
Total debt	750,000,000	750,000,000
Senior Notes | 4.375% senior notes due March 15, 2029
Debt Instrument [Line Items]
Total debt	500,000,000	500,000,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	$ 0	$ 0