Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Major classes of inventories
Finished goods	$ 330.5	$ 145.8
Service parts	235.2	155.7
Raw materials and work in process	172.0	67.8
Total inventories	$ 737.7	369.3
Prior Period Adjustment Related To Current Presentation [Member]
Major classes of inventories
Total inventories		$ 19.7