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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($) Store States Region Segment Customer shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares
Significant Accounting Policies [Line Items] |  |  |
Number of Locations | Store | 565 |  |
Number of states | States | 42 |  |
Number of geographic regions | Region | 3 |  |
Number of operating segments | Segment | 3 |  |
Number of reportable segment | Segment | 1 |  |
Sales return reserve | $ 17.7 | $ 11.9 |
Insurance reserve balance | $ 171.1 | $ 90.8 |
Options granted | shares | 0 | 0 | 0
2030 Notes | Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Fair value of long term debt | $ 590.9 |  |
2027 Notes | Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Fair value of long term debt | 646.2 |  |
2032 Notes | Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Fair value of long term debt | 1,045.0 |  |
Other Long-term Liabilities |  |  |
Significant Accounting Policies [Line Items] |  |  |
Insurance reserve balance | 103.0 | $ 52.1 |
Other Receivables and Other Assets |  |  |
Significant Accounting Policies [Line Items] |  |  |
Insurance receivable for claims that exceeds stop-loss limits | $ 12.6 | 5.7 |
Leasehold Improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Leasehold improvements | The shorter of the estimated useful life or the remaining lease term |  |
Computer Software |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 3 years |  |
Shipping and Handling Costs |  |  |
Significant Accounting Policies [Line Items] |  |  |
Shipping and handling costs | $ 512.8 | $ 347.7 | $ 332.5
Customer Concentration Risk | Sales Revenue, Net |  |  |
Significant Accounting Policies [Line Items] |  |  |
Number of top sales customers | Customer | 10 |  |
Maximum net sale to single customer, percentage | 5.00% |  |
Customer Concentration Risk | Sales Revenue, Net | Top Ten Customers |  |  |
Significant Accounting Policies [Line Items] |  |  |
Percentage of net revenue from major customers | 18.00% |  |
Supplier Concentration Risk | Cost of Goods Sold |  |  |
Significant Accounting Policies [Line Items] |  |  |
Purchases from largest single supplier, percentage | 7.00% |  |
Minimum | Lease Agreements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Total lease term | 5 years |  |
Renewal term | 1 year |  |
Minimum | Buildings and Improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 10 years |  |
Minimum | Machinery and Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 7 years |  |
Minimum | Furniture, Fixtures and Information Technology |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 3 years |  |
Maximum | Lease Agreements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Total lease term | 15 years |  |
Renewal term | 5 years |  |
Maximum | Buildings and Improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 40 years |  |
Maximum | Machinery and Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 10 years |  |
Maximum | Furniture, Fixtures and Information Technology |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 5 years |  |
Transferred over Time | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Percentage of revenue from installation and construction services | 10.00% |  |

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