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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 02, 2021 | Sep. 26, 2020 | Oct. 02, 2021 | Sep. 26, 2020 | Apr. 03, 2021 | Jan. 02, 2021
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | $ 1,171,000,000 |  | $ 1,171,000,000 |  |  | $ 982,400,000
Accumulated impairment losses | 0 |  | $ 0 |  |  |
Weighted-average amortization period (in years) |  |  | 11 years |  |  |
Aggregate amortization expense | 6,400,000 | $ 5,800,000 | $ 18,700,000 | $ 17,200,000 |  |
Estimated annual amortization expense for fiscal period 2021 | 24,800,000 |  | 24,800,000 |  |  |
Estimated annual amortization expense for fiscal period 2022 | 22,700,000 |  | 22,700,000 |  |  |
Estimated annual amortization expense for fiscal period 2023 | 19,100,000 |  | 19,100,000 |  |  |
Estimated annual amortization expense for fiscal period 2024 | 13,500,000 |  | 13,500,000 |  |  |
Estimated annual amortization expense for fiscal period 2025 | 8,800,000 |  | 8,800,000 |  |  |
Estimated annual amortization expense for fiscal period 2026 | 8,100,000 |  | 8,100,000 |  |  |
Dealer-FX |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill |  |  |  |  | $ 195,200,000 |
Secateurs Pradines |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | 10,700,000 |  | $ 10,700,000 |  |  |
AutoCrib |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill |  |  |  |  | $ 18,300,000 |
Customer relationships |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Weighted-average amortization period (in years) |  |  | 15 years |  |  |
Customer relationship contractual term, minimum (in years) |  |  | 3 years |  |  |
Customer relationship contractual term, maximum (in years) |  |  | 5 years |  |  |
Repair Systems & Information Group |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | 826,000,000.0 |  | $ 826,000,000.0 |  |  | 638,800,000
Repair Systems & Information Group | Dealer-FX |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | 195,200,000 |  | 195,200,000 |  |  |
Commercial & Industrial Group |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | 332,600,000 |  | 332,600,000 |  |  | $ 331,200,000
Commercial & Industrial Group | Secateurs Pradines |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | 10,700,000 |  | 10,700,000 |  |  |
Commercial & Industrial Group | AutoCrib |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | $ 3,300,000 |  | $ 3,300,000 |  |  |

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