CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income		$ (183.2)	$ (21.9)	[1]	$ 56.1	[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	[1]
Foreign currency (gains) losses from re-measurement		(22.5)	20.6	[1]	19.5	[1]
Amortization of debt discount		1.2	1.4	[1]	1.4	[1]
Stock-based compensation amortization		6.8	6.4	[1]	5.1	[1]
Impairment charges		10.8	23.4	[1]	9.7	[1]
Provision for (benefit from) deferred income taxes		22.6	(6.2)	[1]	28.3	[1]
Loss on early extinguishment of debt		0.0	16.9	[1]	0.0	[1]
Amortization of debt issuance costs		9.1	6.8	[1]	5.7	[1]
Loss (gain) on sale of certain assets		1.6	0.4	[1]	(6.4)	[1]
Pension and other post-retirement cost (income)		1.5	(0.6)	[1]	19.0	[1]
Change in assets and liabilities, net of acquisitions:
Increase in trade receivables		(9.9)	(59.5)	[1]	(18.5)	[1]
(Increase) decrease in inventories		(63.0)	74.5	[1]	(30.6)	[1]
Increase in prepaid expenses and other current assets		(21.2)	(8.2)	[1]	(13.4)	[1]
Increase (decrease) in accounts payable		26.8	(12.6)	[1]	34.9	[1]
Increase in accrued expenses and other current liabilities		12.3	11.7	[1]	10.1	[1]
Pension and other post-retirement plan contributions		(8.5)	(8.3)	[1]	(18.1)	[1]
Purchases of permanent displays		(65.5)	(52.1)	[1]	(47.4)	[1]
Other, net		(14.0)	4.2	[1]	(0.5)	[1]
Net cash (used in) provided by operating activities		(139.3)	120.1	[1]	158.1	[1]
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		(108.3)	(59.3)	[1]	(48.3)	[1]
Business acquisition, net of acquired cash		0.0	(1,028.7)	[1]	(41.7)	[1]
Proceeds from the sale of certain assets		0.0	0.5	[1]	6.2	[1]
Net cash used in investing activities		(108.3)	(1,087.5)	[1]	(83.8)	[1]
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in short-term borrowings and overdraft		3.3	0.0	[1]	23.0	[1]
Payment of financing costs		(1.2)	(61.6)	[1]	0.0	[1]
Tax withholdings related to net share settlements of restricted stock units and awards		(2.5)	(3.2)	[1]	(2.8)	[1]
Treasury stock purchased		0.0	(2.7)	[1]	0.0	[1]
Other financing activities		(1.7)	(2.5)	[1]	(3.7)	[1]
Net cash provided by (used in) financing activities		136.9	829.9	[1]	(14.9)	[1]
Effect of exchange rate changes on cash and cash equivalents		11.3	(2.6)	[1]	(7.8)	[1]
Net (decrease) increase in cash, cash equivalents and restricted cash		(99.4)	(140.1)	[1]	51.6	[1]
Cash, cash equivalents and restricted cash at beginning of period	[1]	186.8	326.9		275.3
Cash, cash equivalents and restricted cash at end of period		87.4	186.8	[1]	326.9	[1]
Cash paid during the period for:
Interest		149.1	91.7	[1]	79.9	[1]
Income taxes, net of refunds		0.4	21.9	[1]	25.4	[1]
Credit Facility
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings under the 2016 Revolving Credit Facility		157.0	0.0	[1]
2016 Term Loan
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings under the 2016 Revolving Credit Facility		0.0	1,791.0	[1]	0.0	[1]
Repayments under the 2016 Term Loan Facility		(18.0)	(4.5)
Acquisition Term Loan [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt		0.0	(15.1)	[1]	(19.3)	[1]
Early repayment of debt		0.0	(658.6)	[1]	0.0	[1]
2011 Term Loan [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of debt		0.0	(11.5)	[1]	(12.1)	[1]
Early repayment of debt		0.0	(651.4)	[1]	0.0	[1]
6.25% Senior Notes
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from the issuance of 6.25% Senior Notes		$ 0.0	$ 450.0	[1]	$ 0.0	[1]

[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.