Segment Information (Long-Lived Assets by Major Country) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	$ 746.0	$ 893.8	$ 1,125.6
Brazil
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	203.3	283.2	396.9
U.S.
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	120.8	152.6	174.4
Poland
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	86.3	93.7	107.8
All other
Segment Reporting, Asset Reconciling Item [Line Items]
Long-lived assets	$ 335.6	$ 364.3	$ 446.5