Restructuring Charges - Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			7 Months Ended		9 Months Ended		12 Months Ended		3 Months Ended	7 Months Ended		12 Months Ended		3 Months Ended		7 Months Ended		12 Months Ended		3 Months Ended		7 Months Ended		12 Months Ended		3 Months Ended		7 Months Ended		12 Months Ended				3 Months Ended	7 Months Ended		12 Months Ended		3 Months Ended	7 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 2012 Restructuring [Member]	Mar. 31, 2013 2012 Restructuring [Member]		Dec. 31, 2013 2012 Restructuring [Member]		Dec. 31, 2012 2012 Restructuring [Member]		Mar. 31, 2013 2012 Restructuring [Member] Total Restructuring Charges [Member]	Mar. 31, 2013 2012 Restructuring [Member] Total Restructuring Charges [Member]		Dec. 31, 2012 2012 Restructuring [Member] Total Restructuring Charges [Member]		Mar. 31, 2013 2012 Restructuring [Member] Returns [Member]		Mar. 31, 2013 2012 Restructuring [Member] Returns [Member]		Dec. 31, 2012 2012 Restructuring [Member] Returns [Member]		Mar. 31, 2013 2012 Restructuring [Member] Inventory Write-Offs [Member]		Mar. 31, 2013 2012 Restructuring [Member] Inventory Write-Offs [Member]		Dec. 31, 2012 2012 Restructuring [Member] Inventory Write-Offs [Member]		Mar. 31, 2013 2012 Restructuring [Member] Other Charges [Member]		Mar. 31, 2013 2012 Restructuring [Member] Other Charges [Member]		Dec. 31, 2012 2012 Restructuring [Member] Other Charges [Member]		Dec. 31, 2012 2012 Restructuring [Member] Pension Curtailment [Member]		Mar. 31, 2013 Employee Severance and other Personnel Benefits [Member] 2012 Restructuring [Member]	Mar. 31, 2013 Employee Severance and other Personnel Benefits [Member] 2012 Restructuring [Member]		Dec. 31, 2012 Employee Severance and other Personnel Benefits [Member] 2012 Restructuring [Member]		Mar. 31, 2013 Other Restructuring Costs [Member] 2012 Restructuring [Member]	Mar. 31, 2013 Other Restructuring Costs [Member] 2012 Restructuring [Member]		Dec. 31, 2012 Other Restructuring Costs [Member] 2012 Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0.2	$ 0	$ 0.3					$ 24.1	[1]	$ 0.2			$ 20.7	[1]	$ 0	[2]			$ 1.6	[1],[2]	$ 0	[3]			$ 1.2	[1],[3]	$ 0.1	[4]			$ 0.6	[1],[4]	$ 1.5	[2]	$ (0.5)			$ 18.4	[1]	$ 0.7			$ 2.3	[1]
Restructuring and related cost, cost incurred to date			24.4							20.9					1.6	[2]					1.2	[3]					0.7	[4]							17.9					3.0
Total expected charges				25.1	[5]	1.0	[2]				21.5	[5]					1.6	[2],[5]					1.2	[3],[5]					0.8	[4],[5]						17.9	[5]				3.6	[5]
Total expected restructuring charges			24	24
Restructuring reserve, settled with cash	$ 4.5		$ 4.5					$ 3.8																											$ 3.5					$ 0.9

[1] Included within the $20.7 million restructuring charges is a net pension curtailment gain of $1.5 million.

[2] Returns are recorded as a reduction to net sales in the Company’s Statements of Operations and Comprehensive (Loss) Income.

[3] Inventory write-offs are recorded within cost of sales in the Company’s Statements of Operations and Comprehensive (Loss) Income.

[4] Other charges are recorded within SG&A expenses within the Company’s Statements of Operations and Comprehensive (Loss) Income.

[5] Additional charges of approximately $1.0 million are expected to be incurred in 2013.