Segment Information - Total Assets (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Assets
Total assets:	$ 9,372	$ 9,669	$ 9,735
Reportable segment totals
Assets
Total assets:	8,809	9,167	9,183
Other
Assets
Total assets:	563	502	552
Americas | Reportable segment totals
Assets
Total assets:	4,882	5,218	5,474
Europe | Reportable segment totals
Assets
Total assets:	$ 3,927	$ 3,949	$ 3,709