CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015	[1]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (178.7)	$ (15.7)	[1]	$ 62.1
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization	155.8	123.2	[1]	103.2
Foreign currency (gains) losses from re-measurement	(22.5)	20.6	[1]	19.5
Amortization of debt discount	1.2	1.4	[1]	1.4
Stock-based compensation amortization	6.8	6.4	[1]	5.1
Impairment charges	10.8	23.4	[1]	9.7
Provision for (benefit from) deferred income taxes	16.7	(6.9)	[1]	31.5
Loss on early extinguishment of debt	0.0	16.9	[1]	0.0
Amortization of debt issuance costs	9.1	6.8	[1]	5.7
Loss (gain) on sale of certain assets	1.6	0.4	[1]	(6.4)
Pension and other post-retirement cost (income)	1.5	(0.6)	[1]	19.0
Change in assets and liabilities, net of acquisitions:
Increase in trade receivables	(9.9)	(59.5)	[1]	(18.5)
(Increase) decrease in inventories	(63.0)	74.5	[1]	(30.6)
Increase in prepaid expenses and other current assets	(30.2)	(19.5)	[1]	(25.4)
Increase (decrease) in accounts payable	26.8	(12.6)	[1]	34.9
Increase in accrued expenses and other current liabilities	18.8	14.7	[1]	13.0
Pension and other post-retirement plan contributions	(8.5)	(8.3)	[1]	(18.1)
Purchases of permanent displays	(65.5)	(52.1)	[1]	(47.4)
Other, net	(10.1)	4.3	[1]	(0.6)
Net cash (used in) provided by operating activities	(139.3)	117.4	[1]	158.1
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(108.3)	(59.3)	[1]	(48.3)
Business acquisition, net of acquired cash	0.0	(1,028.7)	[1]	(41.7)
Proceeds from the sale of certain assets	0.0	0.5	[1]	6.2
Net cash used in investing activities	(108.3)	(1,087.5)	[1]	(83.8)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in short-term borrowings and overdraft	3.3	0.0	[1]	23.0
Payment of financing costs	(1.2)	(61.6)	[1]	0.0
Tax withholdings related to net share settlements of restricted stock units and awards	(2.5)	(3.2)	[1]	(2.8)
Other financing activities	(1.7)	(2.5)	[1]	(3.7)
Net cash provided by (used in) financing activities	136.9	832.6	[1]	(14.9)
Effect of exchange rate changes on cash and cash equivalents	11.3	(2.6)	[1]	(7.8)
Net (decrease) increase in cash, cash equivalents and restricted cash	(99.4)	(140.1)	[1]	51.6
Cash, cash equivalents and restricted cash at beginning of period	186.8	326.9	[1]	275.3
Cash, cash equivalents and restricted cash at end of period	87.4	186.8		326.9
Cash paid during the period for:
Interest	149.1	91.7	[1]	79.9
Income taxes, net of refunds	0.4	21.9	[1]	25.2
Amended Revolving Credit Facility [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings under the 2016 Revolving Credit Facility	157.0	0.0	[1]
2016 Term Loan [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings under the 2016 Revolving Credit Facility	0.0	1,791.0	[1]	0.0
Repayments under the 2016 Term Loan Facility	(18.0)	(4.5)	[1]
Repayments of debt	(18.0)	(4.5)
Proceeds from the issuance of 6.25% Senior Notes		1,791.0
Acquisition Term Loan [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	0.0	(15.1)	[1]	(19.3)
Early repayment of debt	0.0	(658.6)	[1]	0.0
2011 Term Loan [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt	0.0	(11.5)	[1]	(12.1)
Early repayment of debt	0.0	(651.4)	[1]	0.0
Tax withholdings related to net share settlements of restricted stock units and awards	(2.5)
6.25% Senior Notes [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from the issuance of 6.25% Senior Notes	$ 0.0	$ 450.0	[1]	$ 0.0

[1] Adjusted as a result of the adoption of certain accounting pronouncements beginning on January 1, 2017. See Note 1, "Description of Business and Summaryof Significant Accounting Policies - Recently Adopted Accounting Pronouncements," for details of these adjustments.