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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Apr. 01, 2017 | Apr. 02, 2016 | Dec. 31, 2016
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 859.8 |  | $ 895.5
Gross carrying value, Total | 416.1 |  | 367.9
Non-amortized trademarks | $ 79.3 |  | 64.2
Weighted-average amortization period (in years) | 12 years |  |
Aggregate amortization expense | $ 7.1 | $ 6.1 |
Estimated annual amortization expense for fiscal period 2017 | 26.9 |  |
Estimated annual amortization expense for fiscal period 2018 | 24.0 |  |
Estimated annual amortization expense for fiscal period 2019 | 20.9 |  |
Estimated annual amortization expense for fiscal period 2020 | 17.1 |  |
Estimated annual amortization expense for fiscal period 2021 | 14.8 |  |
Estimated annual amortization expense for fiscal period 2022 | 10.1 |  |
Repair Systems & Information Group [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Goodwill | 597.3 |  | 640.6
Commercial & Industrial Group [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Goodwill | 250.0 |  | 242.4
BTC [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Goodwill | 8.6 |  |
Car-O-Liner Holding AB [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Goodwill | 69.0 |  |
Car-O-Liner Holding AB [Member] | Repair Systems & Information Group [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Goodwill | 68.1 |  |
Car-O-Liner Holding AB [Member] | Commercial & Industrial Group [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Goodwill | 0.9 |  |
Car-O-Liner Holding AB [Member] | Trademarks [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Gross carrying value, Total | 14.5 |  |
Ryeson Corporation [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Goodwill | 5.0 |  |
Customer relationships [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Gross carrying value, Total | $ 187.1 |  | $ 142.6
Weighted-average amortization period (in years) | 16 years |  |
Customer relationship contractual term, minimum (in years) | 3 years |  |
Customer relationship contractual term, maximum (in years) | 5 years |  |
Customer relationships [Member] | Car-O-Liner Holding AB [Member] |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Gross carrying value, Total | $ 44.3 |  |

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- Definition Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style for a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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