Other Financial Information (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid expenses	$ 113	$ 99
Contract assets	6	10
Other	3	2
Total other current assets	209	197
Other current assets excluded due to being classified as held for sale	62	56
Contract fulfillment costs
Prepaid Expense and Other Assets, Current [Abstract]
Contract costs	46	44
Contract acquisition costs
Prepaid Expense and Other Assets, Current [Abstract]
Contract costs	$ 41	$ 42