Facility Closing and Reorganization Costs - Approved Plans and Related Charges (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended	6 Months Ended	12 Months Ended	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2011 Organization Optimization Initiative Position	Dec. 31, 2013 Facility Closing	Dec. 31, 2010 Department Realignment Position	Jun. 30, 2012 Functional Realignment Position	Dec. 31, 2013 Functional Realignment	Dec. 31, 2012 Field and Functional Reorganization
Restructuring Cost and Reserve [Line Items]
Charges incurred to date		$ 24.0	$ 38.2	$ 5.4		$ 33.1	$ 11.3
Expected costs	$ 4.2
Reduction of workforce		300		75	120