Financial Instruments Cross-currency forward-exchange contracts (Details) - Derivatives Designated as Hedging Instruments: - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Forward-starting interest rate swap contracts
Foreign Currency Fair Value Hedge Derivative [Line Items]
Unrealized gains on derivatives for net investment hedges, net of tax of $11 and $5 for the three months ended September 30, 2022 and 2021; and $24 and $10 for the nine months ended September 30, 2022 and 2021, respectively	$ 30	$ 1	$ 77	$ 20
Foreign exchange derivative instruments
Foreign Currency Fair Value Hedge Derivative [Line Items]
Unrealized gains on derivatives for net investment hedges, net of tax of $11 and $5 for the three months ended September 30, 2022 and 2021; and $24 and $10 for the nine months ended September 30, 2022 and 2021, respectively	$ 39	$ 16	$ 84	$ 33