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Summary of Significant Accounting Policies - Inventory, warranty and other (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Inventory [Abstract] |  |  |  |  |  |
Finished goods | $ 148.6 |  | $ 148.6 |  |  | $ 126.7
Work-in-process | 12.3 |  | 12.3 |  |  | 10.0
Raw materials and supplies | 59.1 |  | 59.1 |  |  | 62.5
Total | 220.0 |  | 220.0 |  |  | 199.2
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |  |  |  |
Accrued expenses | 17.8 |  | 17.8 |  |  | 14.9
Other non-current liabilities | 11.6 |  | 11.6 |  |  | 11.2
Royalty income, net of royalty expense | 4.6 | 4.1 | 9.1 |  | 5.1 |
Revenue Recognition [Abstract] |  |  |  |  |  |
Allowance for doubtful accounts included in accounts receivable, net | 22.6 |  | 22.6 |  |  | 19.3
Research and Development Expenses {Abstract] |  |  |  |  |  |
Research and development costs charged to expense | 5.5 | 4.6 | 11.3 |  | 9.4 |
Tempur North America [Member] | Mattresses |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 25 years | [1] |  |
Basis on which warranty of product is spread |  |  | prorated | [1] |  |
Tempur North America [Member] | Pillows |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 3 years |  |  |
Tempur International [Member] | Mattresses |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 15 years | [1] |  |
Basis on which warranty of product is spread |  |  | prorated | [1] |  |
Tempur International [Member] | Pillows |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 3 years |  |  |
Sealy [Member] | Mattresses |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Basis on which warranty of product is spread |  |  | non-prorated | [2] |  |
Prorated [Member] | Mattresses |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 10 years |  |  |
Sales Returns [Member] |  |  |  |  |  |
Sales returns [Abstract] |  |  |  |  |  |
Beginning balance |  |  | 28.7 |  |  |
Amounts accrued |  |  | 63.4 |  |  |
Returns charged to accrual |  |  | (61.8) |  |  |
Ending balance | 30.3 |  | 30.3 |  |  |
Warranty Reserves [Member] |  |  |  |  |  |
Movement in Standard Product Warranty Accrual [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  | 26.1 |  |  |
Amounts accrued |  |  | 17.2 |  |  |
Warranties charged to accrual |  |  | (13.9) |  |  |
Ending balance | $ 29.4 |  | $ 29.4 |  |  |
Minimum [Member] | Sealy [Member] | Mattresses |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 10 years | [2] |  |
Minimum [Member] | Non-prorated [Member] | Sealy [Member] | Mattresses |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 10 years |  |  |
Maximum [Member] | Sealy [Member] | Mattresses |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 25 years | [2] |  |
Maximum [Member] | Non-prorated [Member] | Sealy [Member] | Mattresses |  |  |  |  |  |
Warranty Term [Abstract] |  |  |  |  |  |
Warranty Term |  |  | 15 years |  |  |
[1] | The last 10 years of warranty period are prorated on a straight-line basis.
[2] | Products have various warranty terms, generally non-prorated for the first 10 to 15 years and then prorated for the balance of the warranty term.

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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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