Consolidated Balance Sheet Parentheticals - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss, Current	$ 0	$ 0
Finite-Lived Intangible Assets, Accumulated Amortization	$ 93	$ 100
Common stock, shares authorized (in shares)	1,000	1,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	935.51	935.51
Common stock (authorized: 1,000 shares of $0.01 par value each; issued: 935.51 shares)	$ 0	$ 0
Accumulated other comprehensive loss	(1,343)	(1,402)
Additional paid-in capital	1,034	141
Retained earnings	$ 2,474	$ 2,605