Organization consolidation and presentation of financial statements.

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Product warranties expiration term.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

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The amount of a reclassification adjustment made to prior period financial statement amounts.

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Describes the nature of the product warranty, including the approximate term of the product warranty, how the product warranty arose, and the events or circumstances that would require the warrantor to perform under the product warranty.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Background and Basis of Presentation - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Sep. 30, 2017	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Product warranty term				These product warranties extend over periods ranging from one to twenty-five years from the date of sale, depending upon the product subject to the warranty.
Goodwill impairment charges	$ 0			$ 0	$ 15,300,000
Intangible asset impairment charges, excluding goodwill		$ 7,400,000			7,400,000
Pretax impairment charges	$ 0	$ 7,375,000		$ 0	$ 22,668,000
Effective income tax rate	24.80%	11.40%		23.60%	24.60%
Statutory tax rate	35.00%	35.00%		35.00%	35.00%
Number of shares repurchased			2,500,000
Stock Compensation Plan [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Amount of outstanding equity based awards not included in computation of diluted earnings per share	1,700,000	1,400,000		1,300,000	1,500,000
Number of shares repurchased	2,300,000	0		4,800,000	0
ASU No. 2016-09 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cumulative effect on retained earnings, net of tax	$ 200,000			$ 200,000
ASU No. 2016-09 [Member] \| Impact of Excess Tax Benefits on Income Tax Expense [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impact of recent accounting pronouncements	$ 400,000			13,500,000
ASU No. 2016-09 [Member] \| Excess Tax Benefit or Deficiencies Impact in Operating Activities [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Increase in net cash					$ 8,100,000
ASU No. 2016-09 [Member] \| Excess Tax Benefit or Deficiencies Impact in Financing Activities [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Increase in net cash					8,100,000
ASU No. 2016-15 [Member] \| Debt Redemption Premium Impact in Financing Activities [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impact of recent accounting pronouncements				$ 14,800,000	$ 17,800,000
Minimum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Product warranties expiration term				1 year
Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Product warranties expiration term				25 years
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Anixter International Inc. [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage	12.00%	11.00%		11.00%	11.00%
Customer Concentration Risk [Member] \| Accounts Receivable \| Anixter International Inc. [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage				11.00%
Customer Concentration Risk [Member] \| Accounts Receivable \| Verizon Communications Inc. [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage				11.00%
Product Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Maximum [Member] \| ASU No. 2014-09 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage	2.00%			2.00%