Income Taxes (Deferred Tax Assets and Deferred Tax Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred Tax Liabilities:
Differences between book and tax basis of property	$ (966)	$ (903)
Deferred Tax Liabilities, Investment in US Tax Partnerships	(578)	(582)
Deferred income taxes	1,245	1,139
Other taxable temporary differences	(403)	(350)
Deferred Tax Liabilities, Gross	(1,947)	(1,835)
Deferred Tax Assets:
Operating loss carryforwards	1,132	1,129
Capital loss carryforwards	65	62
Bad debt and other book provisions	92	57
Tax credit carryforwards	72	62
Other deductible temporary differences	409	282
Total gross deferred tax asset	1,770	1,592
Less: Valuation allowance	(672)	(577)
Total net deferred tax asset	1,098	1,015
Total deferred tax liability	$ (849)	$ (820)