Income Taxes - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Valuation allowance related to foreign net operating losses	$ 34.3
State net operating loss carry forwards	8.8
Gross unrecognized tax benefits including interest and penalties	52.1
Accrued potential interest related to unrecognized tax benefits	2.7
Recorded liabilities for potential interest	6.8	2.0	1.9
Recorded liabilities for potential penalties	0.3
Reversed liability due to expiration of statute of limitations	0.9	2.5	2.3
Unrecognized tax benefits to be decreased in next 12 months due to statute of limitation expirations	1.6
Federal income taxes not provided on undistributed earnings of non-U.S. subsidiaries	34.6
Tax savings due to reduction in tax rate	1.1	0.7	0.9
Increase in diluted earnings per share	$ 0.009	$ 0.006	$ 0.009
Benefits from a tax ruling	The Company benefits from a tax ruling concluded in Switzerland. This ruling provides for a lower rate of taxation on certain classes of income and requires various thresholds of investment and employment in Switzerland.
Additional period for renewal for investment and employment in foreign country	expires end of 2013 and renewable for additional 5 years
State [Member]
Operating loss carry forwards	87.2
Expire of operating loss carryforwards	2014
Tax credit carryovers	26.6
Tax credit expiration	do not expire
Foreign [Member]
Operating loss carry forwards	101.6
Expire of operating loss carryforwards	do not expire
Internal Revenue Service (IRS) [Member]
Tax credit carryovers	1.0
Year that federal tax credits expire	2031
Federal AMT [Member]
Tax credit carryovers	$ 2.2
Tax credit expiration	do not expire