Business Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 segment	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Number of business segments									3
Segment information [Abstract]
Total assets	$ 2,729.9				$ 1,319.5				$ 2,729.9	$ 1,319.5
Long-lived assets	1,921.3				465.2				1,921.3	465.2
Net sales									2,464.3	1,402.9	1,417.9
Inter segment sales									0	0	0
Gross profit	272.9	298.7	254.9	188.4	170.6	171.2	166.9	205.9	1,014.9	714.6	743.1
Operating income	74.1	81.2	44.0	44.5	51.3	63.4	47.5	86.1	243.8	248.3	340.5
Income before income taxes									128.0	229.2	328.4
Depreciation and amortization (including stock-based compensation amortization)									91.5	42.0	51.0
Intercompany royalties									0	0	0
Capital expenditures									40.0	50.5	29.5
Tempur North America [Member]
Segment Reporting Information [Line Items]
Number of domestic manufacturing facilities									2
Operating expenses									83.0	58.0	55.8
Segment information [Abstract]
Total assets	2,110.7				1,166.9				2,110.7	1,166.9
Long-lived assets	393.1				395.7				393.1	395.7
Net sales									910.0	964.3	1,004.7
Inter segment sales									0.2	0.9	5.0
Gross profit									392.7	449.3	499.8
Operating income									67.6	144.4	236.9
Income before income taxes									(33.8)	126.2	224.6
Depreciation and amortization (including stock-based compensation amortization)									42.0	30.6	41.1
Intercompany royalties									5.8	12.7	12.3
Capital expenditures									20.7	36.8	18.8
Tempur North America [Member] | Bedding [Member]
Segment information [Abstract]
Net sales									830.4	882.3	916.7
Tempur North America [Member] | Other Products [Member]
Segment information [Abstract]
Net sales									79.6	82.0	88.0
Tempur International [Member]
Segment information [Abstract]
Total assets	477.7				504.1				477.7	504.1
Long-lived assets	68.7				69.5				68.7	69.5
Net sales									439.6	438.6	413.2
Inter segment sales									0.6	1.5	2.2
Gross profit									269.8	265.3	243.3
Operating income									107.5	103.9	103.6
Income before income taxes									102.6	103.0	103.8
Depreciation and amortization (including stock-based compensation amortization)									12.8	11.4	9.9
Intercompany royalties									(5.8)	(12.7)	(12.3)
Capital expenditures									10.1	13.7	10.7
Tempur International [Member] | Bedding [Member]
Segment information [Abstract]
Net sales									327.7	332.4	309.8
Tempur International [Member] | Other Products [Member]
Segment information [Abstract]
Net sales									111.9	106.2	103.4
Sealy [Member]
Segment information [Abstract]
Total assets	1,956.6				0				1,956.6	0
Long-lived assets	1,459.5				0				1,459.5	0
Net sales									1,114.7	0	0
Inter segment sales									5.9	0	0
Gross profit									352.4	0	0
Operating income									68.7	0	0
Income before income taxes									59.2	0	0
Depreciation and amortization (including stock-based compensation amortization)									36.7	0	0
Intercompany royalties									0	0	0
Capital expenditures									9.2	0	0
Sealy [Member] | Bedding [Member]
Segment information [Abstract]
Net sales									1,040.3	0	0
Sealy [Member] | Other Products [Member]
Segment information [Abstract]
Net sales									74.4	0	0
Intercompany Eliminations [Member]
Segment information [Abstract]
Total assets	(1,815.1)				(351.5)				(1,815.1)	(351.5)
Inter segment sales									(6.7)	(2.4)	(7.2)
United States
Segment information [Abstract]
Long-lived assets	1,647.0				374.7				1,647.0	374.7
Net sales									1,736.8	923.4	958.0
Total International
Segment information [Abstract]
Long-lived assets	274.3				90.5				274.3	90.5
Net sales									727.5	479.5	459.9
Canada
Segment information [Abstract]
Long-lived assets	52.1				20.8				52.1	20.8
Net sales									190.2	40.8	46.7
Other International
Segment information [Abstract]
Long-lived assets	222.2				69.7				222.2	69.7
Net sales									$ 537.3	$ 438.7	$ 413.2