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Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 37,297	$ 35,599
Depreciation Depletion and Amortization Expense for Property, Plant and Equipment	2,020	1,905	$ 1,873
Interstate Natural Gas FERC-Regulated
Property, Plant and Equipment [Line Items]
Accumulated depreciation, depletion and amortization	(10,301)	(9,883)
Depreciable assets	11,731	11,582
Property, plant and equipment, net	12,524	12,228
Interstate Natural Gas FERC-Regulated | Pipelines
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 12,019	11,793
Interstate Natural Gas FERC-Regulated | Pipelines | Minimum
Property, Plant and Equipment [Line Items]
Composite Depreciation Rates	0.80%
Interstate Natural Gas FERC-Regulated | Pipelines | Maximum
Property, Plant and Equipment [Line Items]
Composite Depreciation Rates	6.67%
Interstate Natural Gas FERC-Regulated | Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 9,190	8,839
Interstate Natural Gas FERC-Regulated | Equipment | Minimum
Property, Plant and Equipment [Line Items]
Composite Depreciation Rates	0.80%
Interstate Natural Gas FERC-Regulated | Equipment | Maximum
Property, Plant and Equipment [Line Items]
Composite Depreciation Rates	6.67%
Interstate Natural Gas FERC-Regulated | Other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 823	833
Interstate Natural Gas FERC-Regulated | Other | Minimum
Property, Plant and Equipment [Line Items]
Composite Depreciation Rates	0.00%
Interstate Natural Gas FERC-Regulated | Other | Maximum
Property, Plant and Equipment [Line Items]
Composite Depreciation Rates	25.00%
Interstate Natural Gas FERC-Regulated | Land and land rights-of-way
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 399	388
Interstate Natural Gas FERC-Regulated | Construction work in process
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	394	258
Interstate Natural Gas FERC-Regulated | Land Rights of Way
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	346	346
Other
Property, Plant and Equipment [Line Items]
Accumulated depreciation, depletion and amortization	(11,774)	(10,529)
Depreciable assets	22,604	21,236
Property, plant and equipment, net	24,773	23,371
Other | Pipelines
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 9,631	8,329
Other | Pipelines | Minimum
Property, Plant and Equipment [Line Items]
Straight-Line Estimated Useful Life	5 years
Composite Depreciation Rates	0.09%
Other | Pipelines | Maximum
Property, Plant and Equipment [Line Items]
Straight-Line Estimated Useful Life	40 years
Composite Depreciation Rates	33.33%
Other | Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 19,974	18,645
Other | Equipment | Minimum
Property, Plant and Equipment [Line Items]
Straight-Line Estimated Useful Life	5 years
Composite Depreciation Rates	0.09%
Other | Equipment | Maximum
Property, Plant and Equipment [Line Items]
Straight-Line Estimated Useful Life	40 years
Composite Depreciation Rates	33.33%
Other | Other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 4,773	4,791
Other | Other | Minimum
Property, Plant and Equipment [Line Items]
Straight-Line Estimated Useful Life	3 years
Composite Depreciation Rates	0.00%
Other | Other | Maximum
Property, Plant and Equipment [Line Items]
Straight-Line Estimated Useful Life	10 years
Composite Depreciation Rates	33.33%
Other | Land and land rights-of-way
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 1,518	1,350
Other | Construction work in process
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	651	785
Other | Land Rights of Way
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 720	$ 551

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