Other Financial Information - Other Current Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 98	$ 48
Contract acquisition costs	26	34
Contract fulfillment costs	26	28
Assets held for sale	0	29
Other	2	5
Total other current assets	$ 152	$ 144