Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense relating to all intangible assets	$ 6	$ 9	$ 20	$ 35
Amortization expense for remainder of the year	7		7
Intangible assets amortization expense, year one	25		25
Intangible assets amortization expense, year two	19		19
Intangible assets amortization expense, year three	17		17
Intangible assets amortization expense, year four	14		14
Intangible assets amortization expense, year five	$ 10		$ 10