CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 12.5	$ 56.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11.2	8.7
Amortization of stock-based compensation	3.5	4.4
Amortization of deferred financing costs	0.4	0.4
Write-off of deferred financing costs	4.7	0
Bad debt expense	0.5	0
Deferred income taxes	(41.5)	(5.6)
Equity in earnings of unconsolidated affiliates	(0.2)	0
Foreign currency adjustments and other	(0.1)	1.1
Changes in operating assets and liabilities	14.2	(20.6)
Net cash provided by operating activities	5.2	44.6
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of businesses, net of cash acquired	(1,265.5)	0
Purchases of property, plant and equipment	(5.6)	(6.6)
Other	0.1	0
Net cash used in investing activities	(1,271.0)	(6.6)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from 2012 Credit Agreement	1,525.0	0
Repayments of 2012 Credit Agreement	(24.1)	0
Proceeds from issuance of Senior Notes	375.0	0
Proceeds from 2011 Credit Agreement	46.5	31.5
Repayments of 2011 Credit Agreement	(696.5)	(51.5)
Proceeds from issuance of common stock	4.2	7.3
Excess tax benefit from stock based compensation	2.5	8.7
Treasury stock repurchased	0	(14.9)
Payment of deferred financing costs	(51.5)	0
Other	(0.3)	(0.3)
Net cash provided by (used in) financing activities	1,180.8	(19.2)
NET EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(2.8)	3.8
(Decrease) Increase in cash and cash equivalents	(87.8)	22.6
CASH AND CASH EQUIVALENTS, beginning of period	179.3	111.4
CASH AND CASH EQUIVALENTS, end of period	91.5	134.0
Cash paid during the period for: [Abstract]
Interest	15.1	3.7
Income taxes, net of refunds	$ 7.9	$ 15.0