Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015 segment	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Number of business segments	2us-gaap_NumberOfOperatingSegments
Segment information [Abstract]
Total assets	$ 2,655.1us-gaap_Assets		$ 2,662.6us-gaap_Assets
Total long-lived assets	353.1us-gaap_NoncurrentAssets		355.6us-gaap_NoncurrentAssets
Total net sales	739.5us-gaap_SalesRevenueGoodsNet	701.9us-gaap_SalesRevenueGoodsNet
Inter-segment sales	739.5us-gaap_Revenues	701.9us-gaap_Revenues
Gross profit	278.7us-gaap_GrossProfit	269.5us-gaap_GrossProfit
Intercompany royalty expense (income)	0tpx_IntercompanyRoyaltyIncomeLoss	0tpx_IntercompanyRoyaltyIncomeLoss
Operating income (expense)	54.4us-gaap_OperatingIncomeLoss	62.4us-gaap_OperatingIncomeLoss
Income (loss) before income taxes	35.3	39.2
Depreciation and amortization (including stock-based compensation amortization)	21.8	24.0
Capital expenditures	15.4	7.8
United States
Segment information [Abstract]
Total long-lived assets	292.2		287.3
Total net sales	547.7	504.0
Canada
Segment information [Abstract]
Total long-lived assets	7.2		8.0
Total net sales	46.4	48.6
Other International
Segment information [Abstract]
Total long-lived assets	53.7		60.3
Total net sales	145.4	149.3
Total International
Segment information [Abstract]
Total long-lived assets	60.9		68.3
Total net sales	191.8	197.9
Bedding sales
Segment information [Abstract]
Total net sales	675.7	636.0
Other sales
Segment information [Abstract]
Total net sales	63.8	65.9
North America
Segment information [Abstract]
Total net sales	594.1	552.6
Gross profit	203.1	186.2
Intercompany royalty expense (income)	1.5	1.5
Operating income (expense)	57.9	53.1
Income (loss) before income taxes	56.5	51.5
Depreciation and amortization (including stock-based compensation amortization)	10.6	13.3
Capital expenditures	8.2	4.7
North America \| Bedding sales
Segment information [Abstract]
Total net sales	558.6	517.1
North America \| Other sales
Segment information [Abstract]
Total net sales	35.5	35.5
International
Segment information [Abstract]
Total net sales	145.4	149.3
Gross profit	75.6	83.3
Intercompany royalty expense (income)	(1.5)	(1.5)
Operating income (expense)	25.3	33.5
Income (loss) before income taxes	25.3	31.9
Depreciation and amortization (including stock-based compensation amortization)	4.0	3.6
Capital expenditures	2.1	1.9
International \| Bedding sales
Segment information [Abstract]
Total net sales	117.1	118.9
International \| Other sales
Segment information [Abstract]
Total net sales	28.3	30.4
Corporate
Segment information [Abstract]
Total net sales	0	0
Gross profit	0	0
Intercompany royalty expense (income)	0	0
Operating income (expense)	(28.8)	(24.2)
Income (loss) before income taxes	(46.5)	(44.2)
Depreciation and amortization (including stock-based compensation amortization)	7.2	7.1
Capital expenditures	5.1	1.2
Corporate \| Bedding sales
Segment information [Abstract]
Total net sales	0	0
Corporate \| Other sales
Segment information [Abstract]
Total net sales	0	0
Inter-segment eliminations
Segment information [Abstract]
Total net sales	0	0
Gross profit	0	0
Intercompany royalty expense (income)	0	0
Operating income (expense)	0	0
Income (loss) before income taxes	0	0
Depreciation and amortization (including stock-based compensation amortization)	0	0
Capital expenditures	0	0
Inter-segment eliminations \| Bedding sales
Segment information [Abstract]
Total net sales	0	0
Inter-segment eliminations \| Other sales
Segment information [Abstract]
Total net sales	0	0
Operating Segments
Segment information [Abstract]
Total long-lived assets	353.1		355.6
Operating Segments \| North America
Segment information [Abstract]
Total assets	2,531.7		2,507.4
Total long-lived assets	240.7		240.5
Operating Segments \| International
Segment information [Abstract]
Total assets	477.3		474.3
Total long-lived assets	53.7		60.3
Operating Segments \| Corporate
Segment information [Abstract]
Total assets	673.8		858.5
Total long-lived assets	58.7		54.8
Inter-segment eliminations
Segment information [Abstract]
Total assets	(1,027.7)		(1,177.6)
Inter-segment sales	0	0
Inter-segment eliminations \| North America
Segment information [Abstract]
Inter-segment sales	1.7	0.1
Inter-segment eliminations \| International
Segment information [Abstract]
Inter-segment sales	0.1	0
Inter-segment eliminations \| Corporate
Segment information [Abstract]
Inter-segment sales	0	0
Inter-segment eliminations \| Inter-segment eliminations
Segment information [Abstract]
Inter-segment sales	$ (1.8)	$ (0.1)

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