Retirement Plans - Additional Information (Detail) (USD $)	12 Months Ended		12 Months Ended					12 Months Ended
	Dec. 31, 2012 Employee	Dec. 31, 2011	Dec. 31, 2012 United States Plans	Dec. 31, 2011 United States Plans	Dec. 31, 2012 U.K. Defined Benefit Pension Plan	Dec. 31, 2012 Other Foreign Defined Benefit Pension Plans	Dec. 31, 2012 International Pension Plans	Dec. 31, 2012 U.S. Supplemental Executive Defined Benefit Pension Plan	Dec. 31, 2011 U.S. Supplemental Executive Defined Benefit Pension Plan	Dec. 31, 2013 U.S. Supplemental Executive Defined Benefit Pension Plan Subsequent Event	Dec. 31, 2012 U.S. Qualified Pension Plan	Dec. 31, 2011 U.S. Qualified Pension Plan	Dec. 31, 2012 Net Periodic Benefit Cost	Dec. 31, 2013 Postretirement Benefit Costs Subsequent Event
Defined Benefit Plan Disclosure
Number of former employees elected to receive lump-sum payment	2,000
Lump sum payment made for former employees	$ 52,000,000
Accumulated other comprehensive income (loss), prior service cost expected to be recognized													200,000	(600,000)
Accumulated benefit obligation for defined benefit pension plans	360,400,000	370,100,000
Percentage of expected return on plan assets assumption			5.00%
Discount rate utilized to determine future pension obligations			3.60%	4.20%
Fair value of pension plans assets totaled	302,899,000	339,580,000	278,900,000		23,200,000	800,000	24,000,000
Fair Value of assets	278,900,000
Contributions								1,700,000	1,700,000	2,000,000	1,600,000	8,500,000
Contributions in 2013, approximately										$ 1,800,000