Revenue Recognition Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Contract With Customer, Liability [Line Items]
Contract with Customer, Liability - Beginning of Period	$ 1,081	$ 1,043
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	42	29
Other Significant Noncash Transaction, Value of Consideration Received	2	2
Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination	0	5
Contract with Customer, Liability, Revenue Recognized	(72)	(69)
Contract with Customer, Liability - End of Period	$ 1,053	$ 1,010