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Fair Value Measurement - Fair Value Measurement Inputs and Valuation Techniques (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) MBoe / D $ / Boe	Dec. 31, 2023 USD ($) $ / Boe	Dec. 31, 2022 USD ($)
Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration | $		$ 312	$ 0
Fair Value | $		2,148	3,259
Level 3 Inputs | Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration | $		312	0
Fair Value | $		$ 115	$ 128
Level 3 Inputs | Fair Value, Recurring | Minimum | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurment input		45.48
Level 3 Inputs | Fair Value, Recurring | Maximum | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurment input		63.04
Level 3 Inputs | Fair Value, Recurring | Arithmetic Average | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurment input		57.45
Level 3 Inputs | Fair Value, Nonrecurring | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value | $	$ 472
Level 3 Inputs | Fair Value, Nonrecurring | Measurement Input, Commodity Future Price | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Future prices annual increase (decrease), percentage	2.00%
Level 3 Inputs | Fair Value, Nonrecurring | Minimum | Measurement Input, Commodity Production | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input | MBoe / D	0.2
Level 3 Inputs | Fair Value, Nonrecurring | Minimum | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input	41.45
Level 3 Inputs | Fair Value, Nonrecurring | Minimum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input	0.073
Level 3 Inputs | Fair Value, Nonrecurring | Maximum | Measurement Input, Commodity Production | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input | MBoe / D	17
Level 3 Inputs | Fair Value, Nonrecurring | Maximum | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input	93.68
Level 3 Inputs | Fair Value, Nonrecurring | Maximum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input	0.097
Level 3 Inputs | Fair Value, Nonrecurring | Arithmetic Average | Measurement Input, Commodity Production | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input | MBoe / D	5.4
Level 3 Inputs | Fair Value, Nonrecurring | Arithmetic Average | Measurement Input, Commodity Price Outlook | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input	64.39
Level 3 Inputs | Fair Value, Nonrecurring | Arithmetic Average | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow | Lower 48 | Lower 48 Gulf Coast and Rockies noncore field
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-core assets, measurement input	0.087

X

- Definition

The future price annual increase (decrease) after year 2034, determined the Henry Hub natural gas price outlook based on external pricing service companies' outlooks for years 2022-2034.

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