Schedule II-Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for doubtful accounts
Changes in valuation and qualifying accounts
Balance At Beginning of Period	$ 9.1	$ 8.9	$ 7.5
Additions Charged To Expense	1.2	1.1	2.7
Additions Charged To Other Accounts	1.0	0.3
Deductions	(1.6)	(1.2)	(1.3)
Balance At End of Period	9.7	9.1	8.9
Reserve for excess and obsolete inventories
Changes in valuation and qualifying accounts
Balance At Beginning of Period	26.2	23.9	25.7
Additions Charged To Expense	6.6	6.1	4.4
Additions Charged To Other Accounts	0.4	1.3	0.4
Deductions	(6.2)	(5.1)	(6.6)
Balance At End of Period	$ 27.0	$ 26.2	$ 23.9