Revenue Recognition Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Contract With Customer, Liability [Line Items]
Contract with Customer, Liability - Beginning of Period	$ 1,010	$ 1,093	$ 1,043	$ 1,126
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	95	81	124	110
Other Significant Noncash Transaction, Value of Consideration Received	2	3	4	5
Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination	0	0	5	0
Contract with Customer, Liability, Revenue Recognized	(68)	(62)	(137)	(126)
Contract with Customer, Liability - End of Period	$ 1,039	$ 1,115	$ 1,039	$ 1,115