Income Taxes - Components of Deferred Income Tax (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets
Net operating loss (NOL) carryforwards	$ 132	$ 132
Lease liabilities	239	244
Contract liabilities	59	62
Interest expense carryforwards	99	65
Asset retirement obligation	78	73
Other	62	100
Total deferred tax assets	669	676
Less valuation allowance	(146)	(115)
Net deferred tax assets	523	561
Deferred tax liabilities
Property, plant and equipment	434	457
Licenses/intangibles	408	382
Partnership investments	180	172
Lease assets	221	224
Other	35	34
Total deferred tax liabilities	1,278	1,269
Net deferred income tax liability	$ 755	$ 708