Condensed Consolidating Financial Statements (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 Parent [Member]	Dec. 31, 2010 Parent [Member]	Dec. 31, 2009 Parent [Member]	Dec. 31, 2011 Guarantor Subsidiaries [Member]	Dec. 31, 2010 Guarantor Subsidiaries [Member]	Dec. 31, 2009 Guarantor Subsidiaries [Member]	Dec. 31, 2011 Non-Guarantor Subsidiaries [Member]	Dec. 31, 2010 Non-Guarantor Subsidiaries [Member]	Dec. 31, 2009 Non-Guarantor Subsidiaries [Member]	Dec. 31, 2011 Eliminations [Member]	Dec. 31, 2010 Eliminations [Member]	Dec. 31, 2009 Eliminations [Member]	Dec. 31, 2008 Eliminations [Member]
Condensed Consolidating Statements of Cash Flows
CASH FLOWS FROM OPERATING ACTIVITIES:	$ 76.2	$ 185.8	$ 225.5	$ (2.6)	$ (115.4)	$ 54.0	$ 16.4	$ 315.3	$ 87.0	$ 62.4	$ (14.1)	$ 84.5
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the disposal of property, plant and equipment	0.3	0.2	0.6				0.1	0.1	0.2	0.2	0.1	0.4
Purchases of property, plant and equipment	(43.2)	(45.8)	(58.8)				(35.8)	(33.7)	(48.3)	(7.4)	(12.1)	(10.5)
Proceeds from sale of business	0.6	3.6	10.0					0.1	1.1	0.6	3.5	8.9
Return of investment	0		0.9									0.9
Purchases of short-term investments			(16.9)									(16.9)
Proceeds from sales and maturities of short-term investments			50.2									50.2
Acquisition of businesses	(147.7)	(7.2)					(147.7)	(7.2)
Restricted cash	12.2	(12.2)								12.2	(12.2)
Net cash used in investing activities	(177.8)	(61.4)	(14.0)				(183.4)	(40.7)	(47.0)	5.6	(20.7)	33.0
CASH FLOWS FROM FINANCING ACTIVITIES:
Short-term borrowings (payments), net	3.8	(0.8)	(4.3)							3.8	(0.8)	(4.3)
Asset securitization borrowings	345.0									345.0
Asset securitization payments	(345.0)									(345.0)
Long-term payments	(0.9)	(35.9)	(1.7)		(35.0)		(0.8)	(0.1)		(0.1)	(0.8)	(1.7)
Issuance of senior unsecured notes		199.8			199.8
Revolver long-term borrowings	1,539.5	981.5	830.5	1,539.5	981.5	830.5
Payments on revolving credit facility	(1,396.5)	(1,058.0)	(1,013.8)	(1,396.5)	(1,058.0)	(1,013.8)
Additional investments in affiliates		(1.0)									(1.0)
Proceeds from stock option exercises	2.5	3.5	9.4	2.5	3.5	9.4
Payments of deferred financing costs	(2.2)	(1.8)		(2.2)	(1.8)
Repurchases of common stock	(123.0)	(153.7)	(5.6)	(123.0)	(153.7)	(5.6)
Excess tax benefits related to share-based payments	1.4	5.3	4.9	1.4	5.3	4.9
Intercompany debt				115.1	90.8	21.0	(8.1)	(107.8)	(12.5)	(107.0)	17.0	(8.5)
Intercompany financing activity				(177.8)	194.6	126.5	170.9	(158.6)	(24.0)	6.9	(36.0)	(102.5)
Intercompany investments					(7.9)						7.9
Intercompany dividends					9.0	5.0					(9.0)	(5.0)
Cash dividends paid	(36.5)	(32.4)	(31.1)	(36.5)	(32.4)	(31.1)
Net cash used in financing activities	(11.9)	(93.5)	(211.7)	(77.5)	195.7	(53.2)	162.0	(266.5)	(36.5)	(96.4)	(22.7)	(122.0)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(113.5)	30.9	(0.2)	(80.1)	80.3	0.8	(5.0)	8.1	3.5	(28.4)	(57.5)	(4.5)
EFFECT OF EXCHANGE RATES ON CASH AND CASH EQUIVALENTS	(1.5)	4.8	2.4							(1.5)	4.8	2.4
CASH AND CASH EQUIVALENTS, beginning of year	160.0	124.3	122.1	81.1	0.8		14.7	6.6	3.1	64.2	116.9	119.0	(0.1)	0	0	0
CASH AND CASH EQUIVALENTS, end of year	$ 45.0	$ 160.0	$ 124.3	$ 1.0	$ 81.1	$ 0.8	$ 9.7	$ 14.7	$ 6.6	$ 34.4	$ 64.2	$ 116.9	$ (0.1)	$ 0	$ 0	$ 0