Financial Instruments - Notional Values of Hedging Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Euro notes | Net investment hedge debt
Derivative [Line Items]
Notional Amount	$ 3,525	$ 3,622
British pound sterling notes | Net investment hedge debt
Derivative [Line Items]
Notional Amount	346	356
Swiss franc notes | Net investment hedge debt
Derivative [Line Items]
Notional Amount	802	811
Canadian dollar notes | Net investment hedge debt
Derivative [Line Items]
Notional Amount	480	475
Currency exchange contracts | Intercompany loans and forecasted interest payments
Derivative [Line Items]
Notional Amount	3,073	1,891
Currency exchange contracts | Forecasted transactions
Derivative [Line Items]
Notional Amount	4,822	4,831
Commodity contracts
Derivative [Line Items]
Notional Amount	10,281	9,694
Interest rate contracts
Derivative [Line Items]
Notional Amount	1,850	1,850
Net investment hedge contracts
Derivative [Line Items]
Notional Amount	7,306	$ 3,915
Net investment hedge contracts | Net investment hedge debt
Derivative [Line Items]
Notional Amount	$ 7,300