Derivatives and Risk Management (Balance Sheet Classification of Derivative Financial Instruments) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Net current derivative liabilities	$ (3,842)	$ (1,098)
Net long-term derivative liabilities	(900)	(407)
Non-performance risk adjustment	8	3
Derivative instruments, net	(4,734)	(1,502)
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative assets	230	411
Derivative liabilities	4,972	1,916
Not Designated as Hedging Instrument \| Interest rate swaps \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	0	2
Natural Gas \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	0	79
Natural Gas \| Not Designated as Hedging Instrument \| Fixed price swaps \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	0	64
Natural Gas \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	1,999	565
Natural Gas \| Not Designated as Hedging Instrument \| Fixed price swaps \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	522	246
Natural Gas \| Not Designated as Hedging Instrument \| Two-way costless collars \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	10	9
Natural Gas \| Not Designated as Hedging Instrument \| Two-way costless collars \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	44	100
Natural Gas \| Not Designated as Hedging Instrument \| Two-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	316	104
Natural Gas \| Not Designated as Hedging Instrument \| Two-way costless collars \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	190	115
Natural Gas \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	9	12
Natural Gas \| Not Designated as Hedging Instrument \| Three-way costless collars \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	12	37
Natural Gas \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	977	298
Natural Gas \| Not Designated as Hedging Instrument \| Three-way costless collars \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	195	178
Natural Gas \| Not Designated as Hedging Instrument \| Basis swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	82	77
Natural Gas \| Not Designated as Hedging Instrument \| Basis swaps \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	70	22
Natural Gas \| Not Designated as Hedging Instrument \| Basis swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	43	9
Natural Gas \| Not Designated as Hedging Instrument \| Basis swaps \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	5	22
Natural Gas \| Not Designated as Hedging Instrument \| Call options \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	201	67
Natural Gas \| Not Designated as Hedging Instrument \| Call options \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	57	42
Ethane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	0	2
Ethane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	28	10
Ethane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	1	0
Ethane \| Not Designated as Hedging Instrument \| Two-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	1
Propane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	0	2
Propane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	122	78
Propane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	4	1
Propane \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	6	4
Normal Butane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	0	1
Normal Butane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	44	27
Normal Butane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	2	0
Oil \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	101	60
Oil \| Not Designated as Hedging Instrument \| Fixed price swaps \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	21	9
Oil \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	1	1
Oil \| Not Designated as Hedging Instrument \| Three-way costless collars \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	1	3
Oil \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	49	24
Oil \| Not Designated as Hedging Instrument \| Three-way costless collars \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	27	21
Natural Gas Storage \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	1
Natural Gas Storage \| Not Designated as Hedging Instrument \| Purchased fixed price swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	1	0
Natural Gasoline \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	59	33
Natural Gasoline \| Not Designated as Hedging Instrument \| Fixed price swaps \| Long-term derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 3	$ 1

Derivative Assets (Liabilities), at Fair Value, Net, Current

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- Definition

Derivative Assets (Liabilities), at Fair Value, Net, Noncurrent

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Derivative Assets (Liabilities), Non-Performance Risk Adjustment

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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