Acquired Finite And Indefinite Lived Intangible Assets [Line Items]

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- Definition

Customer relationship contractual term maximum.

+ References

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- Definition

Customer relationship contractual term minimum.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ 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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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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

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- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

+ References

No definition available.

+ Details

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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	$ 924,000,000		$ 924,000,000				$ 895,500,000
Gross carrying value, Total	413,200,000		413,200,000				367,900,000
Non-amortized trademarks	115,800,000		115,800,000				64,200,000
Accumulated impairment losses	0		$ 0
Weighted-average amortization period (in years)			11 years
Aggregate amortization expense	7,100,000	$ 5,900,000	$ 20,700,000	$ 18,200,000
Estimated annual amortization expense for fiscal period 2017	27,600,000		27,600,000
Estimated annual amortization expense for fiscal period 2018	26,300,000		26,300,000
Estimated annual amortization expense for fiscal period 2019	22,700,000		22,700,000
Estimated annual amortization expense for fiscal period 2020	18,000,000		18,000,000
Estimated annual amortization expense for fiscal period 2021	14,700,000		14,700,000
Estimated annual amortization expense for fiscal period 2022	9,900,000		9,900,000
Repair Systems & Information Group [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	614,300,000		614,300,000				640,600,000
Commercial & Industrial Group [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	297,200,000		297,200,000				242,400,000
BTC [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	5,900,000		5,900,000		$ 5,900,000
Car-O-Liner Holding AB [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	77,700,000		77,700,000
Car-O-Liner Holding AB [Member] \| Repair Systems & Information Group [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	76,900,000		76,900,000
Car-O-Liner Holding AB [Member] \| Commercial & Industrial Group [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	800,000		800,000
Car-O-Liner Holding AB [Member] \| Trademarks [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross carrying value, Total			30,200,000
Ryeson Corporation [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	5,000,000		5,000,000			$ 5,000,000
Norbar [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	23,700,000		23,700,000
Torque Control Specialist [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	1,900,000		1,900,000
Customer relationships [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross carrying value, Total	175,500,000		$ 175,500,000				$ 142,600,000
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
Customer relationships [Member] \| BTC [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross carrying value, Total	1,200,000		$ 1,200,000
Customer relationships [Member] \| Car-O-Liner Holding AB [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross carrying value, Total	29,100,000		29,100,000
Customer relationships [Member] \| Norbar [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross carrying value, Total	$ 1,100,000		1,100,000
BTC [Member] \| Trademarks [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross carrying value, Total			2,100,000
Norbar [Member] \| Trademarks [Member]
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Gross carrying value, Total			$ 16,900,000