Financial Instruments and Risk Management - Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value Measurements
Total current derivative contracts, assets	$ 170	$ 82
Total noncurrent derivative contracts, assets	63	8
Total current derivative contracts, liabilities	29	84
Total noncurrent derivative contracts, liabilities	3	10
Commodity contracts
Fair Value Measurements
Total current derivative contracts, assets	142	50
Total noncurrent derivative contracts, assets	3	8
Total current derivative contracts, liabilities	20	17
Total noncurrent derivative contracts, liabilities		10
Currency contracts
Fair Value Measurements
Total current derivative contracts, assets	21	30
Total noncurrent derivative contracts, assets	60
Total current derivative contracts, liabilities	8	63
Total noncurrent derivative contracts, liabilities	3
Cross-currency and other contracts
Fair Value Measurements
Total current derivative contracts, assets	7	2
Total current derivative contracts, liabilities	1	4
Derivatives Designated As Hedging Instruments
Fair Value Measurements
Total current derivative contracts, assets	145	53
Total noncurrent derivative contracts, assets	62	8
Total current derivative contracts, liabilities	20	17
Total noncurrent derivative contracts, liabilities		8
Derivatives Designated As Hedging Instruments | Commodity contracts
Fair Value Measurements
Total current derivative contracts, assets	142	50
Total noncurrent derivative contracts, assets	3	8
Total current derivative contracts, liabilities	20	17
Total noncurrent derivative contracts, liabilities		8
Derivatives Designated As Hedging Instruments | Currency contracts
Fair Value Measurements
Total current derivative contracts, assets	2	3
Total noncurrent derivative contracts, assets	59
Derivatives Designated As Hedging Instruments | Cross-currency and other contracts
Fair Value Measurements
Total current derivative contracts, assets	1
Derivatives Not Designated as Hedging Instruments
Fair Value Measurements
Total current derivative contracts, assets	25	29
Total noncurrent derivative contracts, assets	1
Total current derivative contracts, liabilities	9	67
Total noncurrent derivative contracts, liabilities	3	2
Derivatives Not Designated as Hedging Instruments | Commodity contracts
Fair Value Measurements
Total noncurrent derivative contracts, liabilities		2
Derivatives Not Designated as Hedging Instruments | Currency contracts
Fair Value Measurements
Total current derivative contracts, assets	19	27
Total noncurrent derivative contracts, assets	1
Total current derivative contracts, liabilities	8	63
Total noncurrent derivative contracts, liabilities	3
Derivatives Not Designated as Hedging Instruments | Cross-currency and other contracts
Fair Value Measurements
Total current derivative contracts, assets	6	2
Total current derivative contracts, liabilities	$ 1	$ 4