Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation and Description of Business	Basis of Presentation and Description of Business. Tempur Sealy International, Inc., a Delaware corporation, together with its subsidiaries, is a U.S. based, multinational company. The term "Tempur Sealy International" refers to Tempur Sealy International, Inc. only, and the term "Company" refers to Tempur Sealy International, Inc. and its consolidated subsidiaries. The Company develops, manufactures, markets and sells bedding products, which include mattresses, foundations and adjustable bases, and other products, which include pillows and other accessories. The Company also derives income from royalties by licensing Sealy® and Stearns & Foster® brands, technology and trademarks to other manufacturers. The Company sells its products through two sales channels: Wholesale and Direct. The Company has ownership interests in a group of Asia-Pacific joint ventures to develop markets for Sealy® branded products in those regions. The Company’s ownership interest in these joint ventures is 50.0%. The equity method of accounting is used for these joint ventures, over which the Company has significant influence but does not have control, and consolidation is not otherwise required. The Company's carrying value in its equity method investments of $17.3 million and $22.5 million at September 30, 2019 and December 31, 2018, respectively, is recorded in other non-current assets within the accompanying Condensed Consolidated Balance Sheets. The Company’s equity in the net income and losses of these investments is recorded as equity income in earnings of unconsolidated affiliates in the accompanying Condensed Consolidated Statements of Income. The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X and include all of the information and disclosures required by generally accepted accounting principles in the United States ("GAAP") for interim financial reporting. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements of the Company and related footnotes for the year ended December 31, 2018, included in the 2018 Annual Report filed with the Securities and Exchange Commission on February 25, 2019. The results of operations for the interim periods are not necessarily indicative of results of operations for a full year. It is the opinion of management that all necessary adjustments for a fair presentation of the results of operations for the interim periods have been made and are of a recurring nature unless otherwise disclosed herein.
Adoption of New Accounting Standards	Adoption of New Accounting Standards. Leases. Effective January 1, 2019, the Company adopted Accounting Standards Codification 842, Leases ("ASC 842"). ASC 842 consists of a comprehensive lease accounting standard requiring most leases to be recognized on the Condensed Consolidated Balance Sheet and significant new disclosures. The Company determines if an arrangement contains a lease at inception based on whether or not the Company has the right to control the asset during the contract period and other facts and circumstances. The Company elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed it to carry forward the historical lease classification. Operating lease right-of-use assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease, both of which are recognized based on the present value of the future minimum lease payments over the lease term at the commencement date. Leases with a lease term of 12 months or less at inception are not recorded within the Condensed Consolidated Balance Sheet and are expensed on a straight-line basis over the lease term within the Condensed Consolidated Statement of Income. The lease term is determined by assuming the exercise of renewal options that are reasonably certain. As most leases do not provide an implicit interest rate, the Company used its incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. When contracts contain lease and non-lease components, the Company generally accounts for both components as a single lease component. The adoption of ASC 842 resulted in the recognition of right-of-use assets of $197.2 million and operating lease liabilities of $203.3 million as of January 1, 2019. Results for reporting periods beginning prior to January 1, 2019 continue to be reported in accordance with our historical accounting treatment. The adoption of ASC 842 did not have a material impact on the Company's results of operations, cash flows or debt covenants. For additional information, see Note 8, "Leases" of the Condensed Consolidated Financial Statements. Recently Issued Accounting Pronouncements Credit Losses In June 2016, the FASB issued ("ASU") No. 2016-13, Financial Instruments - Credit Losses (Topic 326), which requires entities to estimate expected lifetime credit losses on financial assets and provide expanded disclosures. This ASU is effective on January 1, 2020. In transition, entities are required to use a modified retrospective approach for the adoption of the new standard. The ASU replaces the incurred loss impairment methodology with one that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The Company is currently evaluating this ASU to determine the impact it will have on the Company's Condensed Consolidated Financial Statements and does not expect it will have a material impact on the consolidated financial statements or disclosures.
Inventories	Inventories. Inventories are stated at the lower of cost and net realizable value, determined by the first-in, first-out method
Accrued Sales Returns	Accrued Sales Returns. The Company allows product returns through certain sales channels and on certain products. Estimated sales returns are provided at the time of sale based on historical sales channel return rates. Estimated future obligations related to these products are provided by a reduction of sales in the period in which the revenue is recognized. Accrued sales returns are included in accrued expenses and other current liabilities in the accompanying Condensed Consolidated Balance Sheets.
Warranties	Warranties. The Company provides warranties on certain products, which vary by segment, product and brand. Estimates of warranty expenses are based primarily on historical claims experience and product testing. Estimated future obligations related to these products are charged to cost of sales in the period in which the related revenue is recognized. The Company considers the impact of recoverable salvage value on warranty costs in determining its estimate of future warranty obligations. The Company provides warranties on mattresses with varying warranty terms. Tempur-Pedic mattresses sold in the North America segment and all Sealy mattresses have warranty terms ranging from 10 to 25 years, generally non-prorated for the first 10 to 15 years and then prorated for the balance of the warranty term. Tempur-Pedic mattresses sold in the International segment have warranty terms ranging from 5 to 15 years, non-prorated for the first 5 years and then prorated on a straight-line basis for the last 10 years of the warranty term. Tempur-Pedic pillows have a warranty term of 3 years, non-prorated.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses in the Company’s accounts receivable. The Company regularly reviews the adequacy of its allowance for doubtful accounts. The Company determines the allowance based on historical write-off experience and current economic conditions and also considers factors such as customer credit, past transaction history with the customer and changes in customer payment terms when determining whether the collection of a customer receivable is reasonably assured. Account balances are charged off against the allowance after all reasonable means of collection have been exhausted and the potential for recovery is considered remote.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2019

Basis of Presentation and Description of Business

Basis of Presentation and Description of Business. Tempur Sealy International, Inc., a Delaware corporation, together with its subsidiaries, is a U.S. based, multinational company. The term "Tempur Sealy International" refers to Tempur Sealy International, Inc. only, and the term "Company" refers to Tempur Sealy International, Inc. and its consolidated subsidiaries.

The Company develops, manufactures, markets and sells bedding products, which include mattresses, foundations and adjustable bases, and other products, which include pillows and other accessories. The Company also derives income from royalties by licensing Sealy® and Stearns & Foster® brands, technology and trademarks to other manufacturers. The Company sells its products through two sales channels: Wholesale and Direct.

The Company has ownership interests in a group of Asia-Pacific joint ventures to develop markets for Sealy® branded products in those regions. The Company’s ownership interest in these joint ventures is 50.0%. The equity method of accounting is used for these joint ventures, over which the Company has significant influence but does not have control, and consolidation is not otherwise required. The Company's carrying value in its equity method investments of $17.3 million and $22.5 million at September 30, 2019 and December 31, 2018, respectively, is recorded in other non-current assets within the accompanying Condensed Consolidated Balance Sheets. The Company’s equity in the net income and losses of these investments is recorded as equity income in earnings of unconsolidated affiliates in the accompanying Condensed Consolidated Statements of Income.

The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X and include all of the information and disclosures required by generally accepted accounting principles in the United States ("GAAP") for interim financial reporting. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements of the Company and related footnotes for the year ended December 31, 2018, included in the 2018 Annual Report filed with the Securities and Exchange Commission on February 25, 2019.

The results of operations for the interim periods are not necessarily indicative of results of operations for a full year. It is the opinion of management that all necessary adjustments for a fair presentation of the results of operations for the interim periods have been made and are of a recurring nature unless otherwise disclosed herein.

Adoption of New Accounting Standards

Adoption of New Accounting Standards.

Leases. Effective January 1, 2019, the Company adopted Accounting Standards Codification 842, Leases ("ASC 842"). ASC 842 consists of a comprehensive lease accounting standard requiring most leases to be recognized on the Condensed Consolidated Balance Sheet and significant new disclosures. The Company determines if an arrangement contains a lease at inception based on whether or not the Company has the right to control the asset during the contract period and other facts and circumstances. The Company elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed it to carry forward the historical lease classification.

Operating lease right-of-use assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease, both of which are recognized based on the present value of the future minimum lease payments over the lease term at the commencement date. Leases with a lease term of 12 months or less at inception are not recorded within the Condensed Consolidated Balance Sheet and are expensed on a straight-line basis over the lease term within the Condensed Consolidated Statement of Income. The lease term is determined by assuming the exercise of renewal options that are reasonably certain. As most leases do not provide an implicit interest rate, the Company used its incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. When contracts contain lease and non-lease components, the Company generally accounts for both components as a single lease component.

The adoption of ASC 842 resulted in the recognition of right-of-use assets of $197.2 million and operating lease liabilities of $203.3 million as of January 1, 2019. Results for reporting periods beginning prior to January 1, 2019 continue to be reported in accordance with our historical accounting treatment. The adoption of ASC 842 did not have a material impact on the Company's results of operations, cash flows or debt covenants. For additional information, see Note 8, "Leases" of the Condensed Consolidated Financial Statements.

Recently Issued Accounting Pronouncements

Credit Losses

In June 2016, the FASB issued ("ASU") No. 2016-13, Financial Instruments - Credit Losses (Topic 326), which requires entities to estimate expected lifetime credit losses on financial assets and provide expanded disclosures. This ASU is effective on January 1, 2020. In transition, entities are required to use a modified retrospective approach for the adoption of the new standard. The ASU replaces the incurred loss impairment methodology with one that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The Company is currently evaluating this ASU to determine the impact it will have on the Company's Condensed Consolidated Financial Statements and does not expect it will have a material impact on the consolidated financial statements or disclosures.

Inventories

Inventories. Inventories are stated at the lower of cost and net realizable value, determined by the first-in, first-out method

Accrued Sales Returns

Accrued Sales Returns. The Company allows product returns through certain sales channels and on certain products. Estimated sales returns are provided at the time of sale based on historical sales channel return rates. Estimated future obligations related to these products are provided by a reduction of sales in the period in which the revenue is recognized. Accrued sales returns are included in accrued expenses and other current liabilities in the accompanying Condensed Consolidated Balance Sheets.

Warranties

Warranties. The Company provides warranties on certain products, which vary by segment, product and brand. Estimates of warranty expenses are based primarily on historical claims experience and product testing. Estimated future obligations related to these products are charged to cost of sales in the period in which the related revenue is recognized. The Company considers the impact of recoverable salvage value on warranty costs in determining its estimate of future warranty obligations.

The Company provides warranties on mattresses with varying warranty terms. Tempur-Pedic mattresses sold in the North America segment and all Sealy mattresses have warranty terms ranging from 10 to 25 years, generally non-prorated for the first 10 to 15 years and then prorated for the balance of the warranty term. Tempur-Pedic mattresses sold in the International segment have warranty terms ranging from 5 to 15 years, non-prorated for the first 5 years and then prorated on a straight-line basis for the last 10 years of the warranty term. Tempur-Pedic pillows have a warranty term of 3 years, non-prorated.

Allowance for Doubtful Accounts

Allowance for Doubtful Accounts. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses in the Company’s accounts receivable. The Company regularly reviews the adequacy of its allowance for doubtful accounts. The Company determines the allowance based on historical write-off experience and current economic conditions and also considers factors such as customer credit, past transaction history with the customer and changes in customer payment terms when determining whether the collection of a customer receivable is reasonably assured. Account balances are charged off against the allowance after all reasonable means of collection have been exhausted and the potential for recovery is considered remote.