Discontinued Operations - Summary of Operating Results and Summary of Major Classes of Assets and Liabilities Reflected as Discontinued Operations on Consolidated Comprehensive Income and Balance Sheet (Detail) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2016

Sep. 30, 2016

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

Mar. 31, 2015

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Income (loss) from discontinued operations, net of tax

$ (0.7)

$ 1.5

$ 0.4

$ 7.8

$ 1.4

$ (0.6)

$ 0.8

$ 9.0

$ (114.3)

Waterloo [Member]

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Net sales

78.2

Loss from discontinued operations before income taxes

(16.0)

Income tax (benefit) expense

(25.0)

Income (loss) from discontinued operations, net of tax

$ 9.0

Waterloo and Simonton [Member]

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Net sales

369.4

Loss from discontinued operations before income taxes

(90.8)

Income tax (benefit) expense

23.5

Income (loss) from discontinued operations, net of tax

$ (114.3)

- Definition

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

+ References + Details

- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

+ References + Details

- Definition

Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

+ References + Details