CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
OPERATING ACTIVITIES:
Net income (loss)	$ 23.5	$ 39.0	$ 73.6	$ (46.6)	$ 43.0
Adjustments to reconcile net income (loss) to net cash from operating activities:
Net cash from operating activities			89.9	392.0
Depreciation	32.1	30.4	95.6	88.7
Intangible amortization	31.8	29.9	96.6	88.5	118.4
Stock-based compensation expense	6.7	5.4	19.5	17.3
Deferred income taxes			9.5	(156.2)
Asset impairment charges and loss on disposal of assets held for sale			26.8	28.1
Other, net			(2.9)	1.2
Changes in operating assets and liabilities, net of the effects of acquisitions and divestitures:
Accounts receivable			(1.8)	17.1
Prepaid expenses			(22.5)	(6.7)
Accounts payable			17.8	(3.3)
Accrued liabilities			(226.2)	364.1
Other assets and liabilities			3.9	(0.2)
INVESTING ACTIVITIES:
Capital expenditures			(96.9)	(91.7)
Payments for acquisitions, net of cash acquired			(39.6)	(23.8)
Proceeds from divestitures of businesses			25.2	1.2
Other, net			1.9	0.6
Net cash from investing activities			(109.4)	(113.7)
FINANCING ACTIVITIES:
Repayments of long-term debt and other obligations			(44.9)	(46.4)
Proceeds from foreign bank debt			8.7	2.5
Repayment of foreign bank debt			(14.9)	(19.0)
Repayment of term loan			(35.6)	(100.0)
Proceeds from senior credit facility			1,334.2	1,269.3
Repayment of senior credit facility			(1,189.1)	(1,336.5)
Proceeds from bank overdrafts, net			0.9	18.2
Payments of capital lease obligations			(5.1)	(2.7)
Payments of deferred financing costs				(2.7)
Proceeds from issuance of common stock, net			20.1	5.0
Payments for repurchase of mandatory convertible preferred stock			(17.2)	(30.8)
Dividends paid on mandatory convertible preferred stock	(8.4)	(8.9)	(25.5)	(27.5)
Payments to noncontrolling interest			(0.2)	(0.7)
Net cash from financing activities			31.4	(271.3)
Effect of exchange rate changes on cash and cash equivalents			(2.1)	1.0
Net change in cash and cash equivalents			9.8	8.0
Cash and cash equivalents at beginning of period			42.2	44.2	44.2
Cash and cash equivalents at end of period	$ 52.0	$ 52.2	52.0	52.2	$ 42.2
SUPPLEMENTAL CASH FLOW INFORMATION:
Net issuances of obligations for acquisitions			27.7	7.8
Capital expenditures in accounts payable			18.2	4.5
Interest paid during the period, net of capitalized interest			62.2	58.9
Income taxes paid during the period, net of refunds			$ 21.5	$ 123.2