Commitments and Contingencies - Summary of Changes in Warranty Liabilities (Detail) (USD $)
In Millions, unless otherwise specified

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Product Warranty Accrual, Warranties Issued

$ 5.2

$ 7.2

Product Warranty Accrual, Payments

5.5

6.4

Schedule of Product Warranty Liability [Table Text Block]

The following table summarizes the changes in the Company’s warranty liabilities:

	Nine Months Ended   September 30,
(in millions)	2014			2013
Balance at January 1	$	8.4		$	6.8
Provisions to expense	5.2			7.2
Payments	(5.5		)	(6.4		)
Balance at September 30	$	8.1		$	7.6

Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]

Balance at January 1

8.4

6.8

Balance at September 30

$ 8.1

$ 7.6