Supplemental Cash Flow Information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Supplemental Cash Flow Information [Abstract]
Accrued capital expenditures	$ 751	$ 528
Non-cash property exchanges	33	63
Cash received (used) related to collateral posted for financial commodity derivative contracts	$ 324	$ 2,275

Future cash outflow to pay for purchases of fixed assets that have occurred.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586

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