Financial Instruments and Risk Management - Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Fair Value Measurements
Total current derivative contracts, assets	$ 288	$ 170
Total noncurrent derivative contracts, assets	77	63
Total current derivative contracts, liabilities	116	29
Total noncurrent derivative contracts, liabilities	2	3
Commodity contracts
Fair Value Measurements
Total current derivative contracts, assets	262	142
Total noncurrent derivative contracts, assets	8	3
Total current derivative contracts, liabilities	82	20
Total noncurrent derivative contracts, liabilities		3
Currency contracts
Fair Value Measurements
Total current derivative contracts, assets	21	21
Total noncurrent derivative contracts, assets	69	60
Total current derivative contracts, liabilities	30	8
Total noncurrent derivative contracts, liabilities	2
Cross-currency and other contracts
Fair Value Measurements
Total current derivative contracts, assets	5	7
Total current derivative contracts, liabilities	4	1
Derivatives Designated As Hedging Instruments
Fair Value Measurements
Total current derivative contracts, assets	266	145
Total noncurrent derivative contracts, assets	76	62
Total current derivative contracts, liabilities	90	20
Derivatives Designated As Hedging Instruments | Commodity contracts
Fair Value Measurements
Total current derivative contracts, assets	262	142
Total noncurrent derivative contracts, assets	8	3
Total current derivative contracts, liabilities	82	20
Derivatives Designated As Hedging Instruments | Currency contracts
Fair Value Measurements
Total current derivative contracts, assets	3	2
Total noncurrent derivative contracts, assets	68	59
Total current derivative contracts, liabilities	8
Derivatives Designated As Hedging Instruments | Cross-currency and other contracts
Fair Value Measurements
Total current derivative contracts, assets	1	1
Derivatives Not Designated as Hedging Instruments
Fair Value Measurements
Total current derivative contracts, assets	22	25
Total noncurrent derivative contracts, assets	1	1
Total current derivative contracts, liabilities	26	9
Total noncurrent derivative contracts, liabilities	2	3
Derivatives Not Designated as Hedging Instruments | Commodity contracts
Fair Value Measurements
Total noncurrent derivative contracts, liabilities		3
Derivatives Not Designated as Hedging Instruments | Currency contracts
Fair Value Measurements
Total current derivative contracts, assets	18	19
Total noncurrent derivative contracts, assets	1	1
Total current derivative contracts, liabilities	22	8
Total noncurrent derivative contracts, liabilities	2
Derivatives Not Designated as Hedging Instruments | Cross-currency and other contracts
Fair Value Measurements
Total current derivative contracts, assets	4	6
Total current derivative contracts, liabilities	$ 4	$ 1