Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities
Net income	$ 106.7	$ 131.7	$ 95.5
Gain on revaluation of previously held joint venture equity interest	0.0	0.0	(28.9)
Amortization of inventory step-up	0.1	0.9	0.4
Loss (gain) on disposal of assets	0.2	(1.3)	(0.3)
Deferred income tax expense (benefit)	22.7	(45.2)	6.0
Insurance claims, net of proceeds	0.0	(0.4)	0.0
Depreciation	34.0	35.6	30.4
Amortization of debt issuance costs	2.1	2.9	3.8
Amortization of intangibles	36.7	35.6	21.6
Stock-based compensation	8.8	17.0	19.4
Loss on debt extinguishment	0.3	0.0	29.9
Other non-cash items	0.0	0.0	0.1
Equity in earnings of joint venture, net of dividends received	0.0	0.0	(1.6)
Changes in balance sheet items:
Accounts receivable	46.0	10.2	13.4
Inventories	(92.9)	2.5	16.7
Other assets	5.5	4.6	5.5
Accounts payable	101.0	(18.7)	(19.3)
Accrued expenses and other liabilities	(72.5)	(8.3)	(31.2)
Accrued income taxes	(3.9)	37.8	5.7
Net cash provided by operating activities	194.8	204.9	167.1
Investing activities
Additions to property, plant and equipment	(34.1)	(31.0)	(18.5)
Proceeds from the disposition of assets	0.2	4.2	0.7
Cost of acquisitions, net of cash acquired	(38.0)	(292.3)	(88.8)
Other	0.0	0.0	0.2
Net cash used by investing activities	(71.9)	(319.1)	(106.4)
Financing activities
Proceeds from long-term borrowings	225.3	484.1	587.4
Repayments of long-term debt	(249.5)	(296.5)	(685.1)
Borrowings of notes payable, net	0.0	0.0	51.5
Payment for debt premium	0.0	0.0	(25.0)
Payments for debt issuance costs	(0.6)	(3.6)	(6.9)
Repurchases of common stock	(75.0)	(36.6)	0.0
Dividends paid	(25.1)	0.0	0.0
Payments related to tax withholding for stock-based compensation	(7.5)	(9.4)	(5.1)
Proceeds from the exercise of stock options	6.8	4.2	6.8
Net cash (used) provided by financing activities	(125.6)	142.2	(76.4)
Effect of foreign exchange rate changes on cash and cash equivalents	(7.2)	6.0	3.2
Net (decrease) increase in cash and cash equivalents	(9.9)	34.0	(12.5)
Cash and cash equivalents
Beginning of the period	76.9	42.9	55.4
End of the period	67.0	76.9	42.9
Supplemental Cash Flow Information [Abstract]
Interest	37.9	38.0	50.1
Income taxes	$ 33.7	$ 34.8	$ 16.9