Other Financial Information- Other Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 67	$ 48
Contract acquisition costs	33	34
Contract fulfillment costs	29	28
Assets held for sale	29	29
Other	4	5
Total other current assets	$ 162	$ 144