Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Tax benefits recognized for net operating loss carryforwards	$ 16.0	$ 4.5	$ 3.2
Investments reinvested outside the country of domicile	4,100.0
Estimated deferred tax liability	400.0
Foreign earnings included in domestic taxable income	249.0	241.7	256.0
Foreign earnings included in domestic taxable income, domestic taxes	18.6	19.5	22.1
Operating loss carryforwards	460.4
Net operating loss carryforwards	67.2	78.2
Carryforward description	The carryforward periods range from five years to indefinite, subject to certain limitations under applicable laws.
Cash paid for income taxes	689.9	434.0	448.2
Unrecognized tax benefits	12.0	13.1	23.4	18.3
Unrecognized tax benefits that, if recognized, would affect the effective tax rate	1.1	1.5	1.9
Expense(Income) related to interest and penalties	(0.8)	(1.1)	1.0
Accrued interest expense and penalties	4.7	5.5	6.7
Other Major Jurisdictions
Income Taxes [Line Items]
Tax examinations	The Company's tax returns for other major jurisdictions remain subject to examination for the years ranging from 2004 through 2014.
Net Operating Loss Carryforwards
Income Taxes [Line Items]
Net operating loss carryforwards	65.8
Minimum
Income Taxes [Line Items]
Operating loss carryforwards periods	5 years
Minimum | Intercompany
Income Taxes [Line Items]
Unrecognized tax benefits, resulting from intercompany transactions	7
Maximum | Intercompany
Income Taxes [Line Items]
Unrecognized tax benefits, resulting from intercompany transactions	8
Internal Revenue Service (IRS)
Income Taxes [Line Items]
Tax examinations	The United States Internal Revenue Service has completed examinations of the Company's tax returns for all years through 2010.
Foreign
Income Taxes [Line Items]
Operating loss carryforwards	206.2
United States
Income Taxes [Line Items]
Operating loss carryforwards	$ 254.2