Derivatives and Risk Management (Balance Sheet Classification of Derivative Financial Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Net current derivative liabilities	$ (1,174)	$ (1,098)
Net long-term derivative liabilities	(307)	(407)
Non-performance risk adjustment	3	3
Total	(1,478)	(1,502)
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative assets	218	411
Derivative liabilities	1,699	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 storage \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	1
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	28	64
Natural Gas \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	581	565
Natural Gas \| Not Designated as Hedging Instrument \| Fixed price swaps \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	281	246
Natural Gas \| Not Designated as Hedging Instrument \| Two-way costless collars \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	47	9
Natural Gas \| Not Designated as Hedging Instrument \| Two-way costless collars \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	18	100
Natural Gas \| Not Designated as Hedging Instrument \| Two-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	235	104
Natural Gas \| Not Designated as Hedging Instrument \| Two-way costless collars \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	56	115
Natural Gas \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	18	12
Natural Gas \| Not Designated as Hedging Instrument \| Three-way costless collars \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	3	37
Natural Gas \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	311	298
Natural Gas \| Not Designated as Hedging Instrument \| Three-way costless collars \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	20	178
Natural Gas \| Not Designated as Hedging Instrument \| Basis swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	64	77
Natural Gas \| Not Designated as Hedging Instrument \| Basis swaps \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	17	22
Natural Gas \| Not Designated as Hedging Instrument \| Basis swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	69	9
Natural Gas \| Not Designated as Hedging Instrument \| Basis swaps \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	1	22
Natural Gas \| Not Designated as Hedging Instrument \| Call options \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	70	67
Natural Gas \| Not Designated as Hedging Instrument \| Call options \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	18	42
Natural Gas \| Not Designated as Hedging Instrument \| Put options \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	4	0
Oil \| Not Designated as Hedging Instrument \| Fixed price swaps \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	1	0
Oil \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	20	60
Oil \| Not Designated as Hedging Instrument \| Fixed price swaps \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	4	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	0	3
Oil \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	31	24
Oil \| Not Designated as Hedging Instrument \| Three-way costless collars \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	21
Ethane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	4	2
Ethane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	1	0
Ethane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	1	10
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	9	2
Propane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Other long-term assets
Derivatives, Fair Value [Line Items]
Derivative assets	1	0
Propane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	78
Propane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	1
Propane \| Not Designated as Hedging Instrument \| Three-way costless collars \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	4
Normal Butane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative assets
Derivatives, Fair Value [Line Items]
Derivative assets	1	1
Normal Butane \| Not Designated as Hedging Instrument \| Fixed price swaps \| Derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	27
Natural Gasoline \| Not Designated as Hedging Instrument \| 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	1	33
Natural Gasoline \| Not Designated as Hedging Instrument \| Fixed price swaps \| Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 0	$ 1

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

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

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Derivative Assets (Liabilities), Non-Performance Risk Adjustment

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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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