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Investments in Affiliates and Other Related Party Transactions - Summarized Income Statement Data for Affiliates Accounted for under Equity Method (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Oct. 03, 2020 | Jul. 04, 2020 | Apr. 04, 2020 | Dec. 31, 2019 | Sep. 28, 2019 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross profit | $ 459.3 | $ 442.8 | $ (127.4) | $ 334.2 | $ 326.8 | $ 459.3 | $ 478.2 | $ 473.2 |  |  |
Net income attributable to affiliates |  |  |  |  |  |  |  |  | $ 75.4 | $ 77.1 | $ 96.9
Group of Equity Method Investments |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,597.5 | 1,670.0 | 1,520.2
Gross profit |  |  |  |  |  |  |  |  | 83.0 | 89.2 | 75.9
Income before provision for income taxes |  |  |  |  |  |  |  |  | 73.8 | 85.7 | 60.0
Net income attributable to affiliates |  |  |  |  |  |  |  |  | $ 44.8 | $ 53.5 | $ 42.2

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