Debt (Details) - USD ($)	9 Months Ended
	Sep. 30, 2024	Jul. 31, 2024
Debt Instrument [Line Items]
Balance as of beginning-of-year	$ 5,949,000,000
Issuance of 5.852% Senior Notes due 2034	350,000,000
Partial repayment of variable-rate term loan, due 2024	(100,000,000)
Unamortized debt issuance costs	(1,000,000)
Unamortized adjustments from discontinued hedges	(12,000,000)
Fair value hedge on interest rate swap agreements	11,000,000
Balance as of end-of-period	$ 6,197,000,000
Due 2034 | Senior notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.852%
Term Loan Due 2024 | Line of Credit | Secured Debt
Debt Instrument [Line Items]
Debt instrument, face amount		$ 250,000,000
Term Loan Due July 16, 2027 | Line of Credit | Secured Debt
Debt Instrument [Line Items]
Debt instrument, face amount		$ 150,000,000
Term Loan Due July 16, 2027 | Line of Credit | Secured Overnight Financing Rate (SOFR) | Secured Debt
Debt Instrument [Line Items]
Debt instrument, adjustment rate	0.10%
Debt instrument, basis spread on variable rate	1.375%