Business Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 segment	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting [Abstract]
Number of business segments	3
Total assets and long-lived assets by segment:
Total Assets	$ 2,771.4		$ 2,729.9
Long-lived assets by segment	1,910.5		1,921.3
Income statement information by segment:
Net sales	701.9	390.1
Gross Profit	269.5	188.4
Operating (loss) income	62.4	44.5
(Loss) income before income taxes	39.2	15.1
Capital expenditures	7.8	5.6
United States [Member]
Total assets and long-lived assets by segment:
Long-lived assets by segment	1,637.7		1,647.0
Income statement information by segment:
Net sales	504.0	253.3
Non United States [Member]
Total assets and long-lived assets by segment:
Long-lived assets by segment	272.8		274.3
Income statement information by segment:
Net sales	197.9	136.8
Canada [Member]
Total assets and long-lived assets by segment:
Long-lived assets by segment	49.5		52.1
Income statement information by segment:
Net sales	48.7	15.0
Other International [Member]
Total assets and long-lived assets by segment:
Long-lived assets by segment	223.3		222.2
Income statement information by segment:
Net sales	149.2	121.8
North America [Member]
Segment Reporting Information [Line Items]
Operating expenses	17.7	29.3
Income statement information by segment:
Net sales	213.0	225.9
North America [Member] | Bedding [Member]
Income statement information by segment:
Net sales	199.5	204.6
North America [Member] | Other Products [Member]
Income statement information by segment:
Net sales	13.5	21.3
International [Member]
Income statement information by segment:
Net sales	125.7	117.5
International [Member] | Bedding [Member]
Income statement information by segment:
Net sales	95.2	89.3
International [Member] | Other Products [Member]
Income statement information by segment:
Net sales	30.5	28.2
Sealy [Member]
Income statement information by segment:
Net sales	363.2	46.7
Sealy [Member] | Bedding [Member]
Income statement information by segment:
Net sales	341.3	44.7
Sealy [Member] | Other Products [Member]
Income statement information by segment:
Net sales	21.9	2.0
Operating Segments [Member]
Total assets and long-lived assets by segment:
Long-lived assets by segment	1,910.5		1,921.3
Income statement information by segment:
Gross Profit	269.5	188.4
Operating (loss) income	62.4	44.5
(Loss) income before income taxes	39.2	15.1
Depreciation and amortization (including stock-based compensation amortization)	24.0	14.7
Intercompany royalties	0	0
Capital expenditures	7.8	5.6
Operating Segments [Member] | North America [Member]
Total assets and long-lived assets by segment:
Total Assets	2,502.1		2,110.7
Long-lived assets by segment	391.1		393.1
Income statement information by segment:
Gross Profit	85.8	103.5
Operating (loss) income	11.1	15.9
(Loss) income before income taxes	(8.2)	(11.7)
Depreciation and amortization (including stock-based compensation amortization)	8.4	9.8
Intercompany royalties	1.5	1.3
Capital expenditures	2.0	3.9
Operating Segments [Member] | International [Member]
Total assets and long-lived assets by segment:
Total Assets	509.2		477.7
Long-lived assets by segment	67.4		68.7
Income statement information by segment:
Gross Profit	75.1	74.2
Operating (loss) income	28.0	31.3
(Loss) income before income taxes	27.4	30.3
Depreciation and amortization (including stock-based compensation amortization)	3.2	3.1
Intercompany royalties	(1.5)	(1.3)
Capital expenditures	1.7	1.7
Operating Segments [Member] | Sealy [Member]
Total assets and long-lived assets by segment:
Total Assets	1,949.8		1,956.6
Long-lived assets by segment	1,452.0		1,459.5
Income statement information by segment:
Gross Profit	108.6	10.7
Operating (loss) income	23.3	(2.7)
(Loss) income before income taxes	20.0	(3.5)
Depreciation and amortization (including stock-based compensation amortization)	12.4	1.8
Intercompany royalties	0	0
Capital expenditures	4.1	0
Intersegment Eliminations [Member]
Total assets and long-lived assets by segment:
Total Assets	(2,189.7)		(1,815.1)
Income statement information by segment:
Net sales	0	0
Intersegment Eliminations [Member] | North America [Member] | Bedding [Member]
Income statement information by segment:
Net sales	0.1	0.1
Intersegment Eliminations [Member] | International [Member] | Other Products [Member]
Income statement information by segment:
Net sales	0.1	0.1
Intersegment Eliminations [Member] | Sealy [Member]
Income statement information by segment:
Net sales	4.3	0
Intersegment Eliminations [Member] | Segment Reconciling Items [Member]
Income statement information by segment:
Net sales	$ (4.5)	$ (0.2)