Fair Value of Derivative Instruments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivatives Fair Value [Line Items]
Derivatives assets	$ 20.5	$ 15.2
Derivatives liabilities	1.7	2.4
Derivatives designated as accounting hedges
Derivatives Fair Value [Line Items]
Derivatives assets	19.6	13.8
Derivatives liabilities	1.0	1.7
Derivatives designated as accounting hedges | Interest rate swaps | Other Assets
Derivatives Fair Value [Line Items]
Derivatives assets	10.3	13.8
Derivatives designated as accounting hedges | Interest rate swaps | Accounts payable and accrued liabilities
Derivatives Fair Value [Line Items]
Derivatives liabilities	0	0.7
Derivatives designated as accounting hedges | Foreign exchange forward | Net Investment Hedging | Other Current Assets
Derivatives Fair Value [Line Items]
Derivatives assets	9.3	0
Derivatives designated as accounting hedges | Foreign exchange forward | Net Investment Hedging | Accounts payable and accrued liabilities
Derivatives Fair Value [Line Items]
Derivatives liabilities	1.0	1.0
Derivatives not designated as accounting hedges | Foreign exchange forward | Other Current Assets
Derivatives Fair Value [Line Items]
Derivatives assets	0.9	1.4
Derivatives not designated as accounting hedges | Foreign exchange forward | Accounts payable and accrued liabilities
Derivatives Fair Value [Line Items]
Derivatives liabilities	$ 0.7	$ 0.7