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Commitments and Contingencies Commitments and Contingencies (Extended Warranty Accrual) (Details) (Extended Warranty [Member], USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Extended Warranty [Member]
   
Balance at beginning of period $ 359.1 $ 375.1
Amortization of deferred revenue for the period (50.6) (50.2)
Additions for extended warranties issued during the period 40.1 46.9
Changes to accruals related to preexisting warranties (1.9) 4.0
Translation (0.1) (0.6)
Balance at end of period $ 346.6 $ 375.2