Debt (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Debt Instrument [Line Items]
Balance as of beginning-of-year	$ 5,949
Issuance of 5.852% Senior Notes due 2034	350
Partial early extinguishment of variable rate term loan, due 2024	(47)
Unamortized debt issuance costs	(2)
Unamortized adjustments from discontinued hedges	(4)
Fair value hedge on interest rate swap agreements	(17)
Balance as of end-of-period	$ 6,229
Due 2034 | Senior notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.852%
SOFR Due 2024 | Term loans | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, adjustment rate	0.10%
Debt instrument, basis spread on variable rate	1.125%