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Income Taxes - Components of Deferred Income Tax (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets    
Net operating loss (NOL) carryforwards $ 250 $ 226
Lease liabilities 265 277
Contract liabilities 63 38
Interest expense carryforwards 74 31
Asset retirement obligation 116 101
Other 129 122
Total deferred tax assets 897 795
Less valuation allowance (177) (149)
Net deferred tax assets 720 646
Deferred tax liabilities    
Property, plant and equipment 805 751
Licenses/intangibles 419 364
Partnership investments 173 155
Lease assets 245 255
Other 43 40
Total deferred tax liabilities 1,685 1,565
Net deferred income tax liability 965 919
Other assets and deferred charges    
Deferred tax liabilities    
Net deferred income tax liability (4) (2)
Deferred income tax liability, net    
Deferred tax liabilities    
Net deferred income tax liability $ 969 $ 921