Segment Information - Total Assets (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Assets
Total assets:	$ 8,873	$ 8,832	$ 8,874
Reportable Segment Totals
Assets
Total assets:	8,353	8,366	8,474
Americas
Assets
Total assets:	5,028	4,853	4,972
Europe
Assets
Total assets:	3,325	3,513	3,502
Other
Assets
Total assets:	$ 520	$ 466	$ 400