Income Taxes (Income (Loss) from Continuing Operations before Income Taxes) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Domestic		$ 1,499	$ 1,661	$ 1,144
Foreign	[1]	29	30	35
Income (loss) before income taxes		$ 1,528	$ 1,691	$ 1,179

[1] Inclusive of income (loss) from continuing operations before income taxes from Puerto Rico