Other Current Liabilities (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Other Current Liabilities
Deferred revenue	$ 88.1	$ 82.5
Accrued compensation	88.0	85.1
Income taxes payable	9.5	60.9
Accrued warranty	26.7	27.9
Derivative liabilities	0.6	0.5
Other accrued expenses	84.9	79.8
Other current liabilities	297.8	336.7
Changes in accrued warranty
Balance at the beginning of the year	27.9	27.9
Accruals for warranties issued during the year	15.6	15.7
Settlements of warranty claims	(17.3)	(15.9)
Foreign currency impact	0.5	0.2
Balance at the end of the year	$ 26.7	$ 27.9