Financial Instruments - Notional Values of Derivative Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Euro notes | Net Investment Hedging
Derivative [Line Items]
Notional Amount	$ 3,622	$ 3,744
British pound sterling notes | Net Investment Hedging
Derivative [Line Items]
Notional Amount	356	360
Swiss franc notes | Net Investment Hedging
Derivative [Line Items]
Notional Amount	811	1,175
Canadian dollar notes | Net Investment Hedging
Derivative [Line Items]
Notional Amount	475	472
Currency exchange contracts | Intercompany loans and forecasted interest payments
Derivative [Line Items]
Notional Amount	1,891	2,184
Currency exchange contracts | Forecasted transactions
Derivative [Line Items]
Notional Amount	4,831	4,169
Commodity contracts
Derivative [Line Items]
Notional Amount	9,694	7,947
Interest rate contracts
Derivative [Line Items]
Notional Amount	1,850	3,500
Net investment hedge contracts
Derivative [Line Items]
Notional Amount	3,915	$ 4,551
Net investment hedge contracts | Net Investment Hedging
Derivative [Line Items]
Notional Amount	$ 3,900