Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Recognized tax benefits	$ 26.1
Income tax benefits related to European restructuring	22.4
Valuation allowance on deferred tax assets, benefit			19.3
Tax Adjustments, Settlements, and Unusual Provisions	(11.0)	(74.8)
Domestic and foreign net operating loss carryforwards	87.6	75.1
Other tax carryforwards	244.0	264.2
Net operating loss and other carryforwards expiring between 2013 and 2022	175.9
Deferred tax liabilities related to foreign earnings	9.1	3.0
Cash payments for income taxes	100.0	106.5	181.1
Cash refunds for income taxes	18.5	11.2	52.0
Income tax benefit associated with dispositions of employee stock options	1.2	(3.6)	(1.1)
Unrecognized tax benefits	47.9	76.4	157.1	176.4
Unrecognized tax benefits that would impact effective tax rate	29.3
Amount of unrecognized tax benefit that will decrease within 12 months	16.9
Total interest expense related to remaining tax uncertainties	4.1	24.0	1.9
Penalty amounts recognized	1.1	2.5	0.9
Accrued interest related to income tax uncertainties	8.5	13.4
Accrued penalties related to income tax uncertainties	2.7	3.9
Aggregate effect on income tax expense as a result of the "tax holiday" agreements	0.2	7.9	8.1
Latin America
Valuation allowance on deferred tax assets, benefit	$ 32.7