Revenue Recognition - Customer Receivables and Contract Balances (Details) - USD ($) $ in Millions	Jun. 30, 2022	Jan. 01, 2022	Dec. 31, 2021	Jan. 01, 2021
Capitalized Contract Cost [Line Items]
Customer receivables	$ 577		$ 640
Contract assets	33		35
Contract liabilities	254	$ 305	247	$ 385
Accounts receivable, gross	614		679
Allowance for credit losses	37		39
Disposal Group, Held-for-sale, Not Discontinued Operations
Capitalized Contract Cost [Line Items]
Customer receivables	94		83
Contract assets	0		0
Contract liabilities	$ 59		$ 58