Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Tax Credit Carryforward [Line Items]
Effective tax rate (as a percent)	14.40%	24.00%	18.10%	24.60%
Unrecognized tax benefits that would affect the effective tax rate	$ 691		$ 691		$ 671
Deferred tax asset, noncurrent	4,000		4,000
Deferred tax assets valuation allowance	1,474		1,474		$ 689
Undistributed earnings not permanently reinvested	100
Deferred tax on undistributed foreign earnings	1,000		1,000
PWS Settlement
Tax Credit Carryforward [Line Items]
Deferred tax assets	$ 3,200		$ 3,200