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Summary of Significant Accounting Policies - Changes In Accured Sales Returns (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2019 USD ($)
Changes in Accrued Sales Returns [Roll Forward] |
Beginning balance | $ 22.0
Ending balance | 24.6
Sales Returns |
Changes in Accrued Sales Returns [Roll Forward] |
Beginning balance | 34.3
Amounts accrued | 52.0
Returns charged to accrual | (49.4)
Ending balance | $ 36.9

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- Definition Changes in Accrued Sales Returns [Roll Forward] + References No definition available. + Details
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Namespace Prefix: | tpx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Carrying value as of the balance sheet date of obligations incurred through that date for estimated product return rights granted to customers. + References No definition available. + Details
Name: | tpx_SalesReturnsAccrualCurrent
Namespace Prefix: | tpx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Increase in the accrual for estimated sales returns. + References No definition available. + Details
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Namespace Prefix: | tpx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Reduction in the accrual for returns charged to sales. The aggregate refunds recognized during an accounting period due to goods returned. + References No definition available. + Details
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Namespace Prefix: | tpx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |