Borrowings - Additional Information (Detail)	9 Months Ended		0 Months Ended		9 Months Ended	0 Months Ended			0 Months Ended				9 Months Ended					9 Months Ended
	Sep. 30, 2013 USD ($) covenant	Dec. 31, 2011 USD ($)	Jun. 09, 2010 2.58% Senior Euro Notes, due June 2015 USD ($)	Jun. 09, 2010 2.58% Senior Euro Notes, due June 2015 EUR (€)	Sep. 30, 2012 2.58% Senior Euro Notes, due June 2015	Dec. 06, 2010 4.5% Senior Notes, due December 2020 USD ($)	Dec. 31, 2010 4.5% Senior Notes, due December 2020	Apr. 15, 2010 4.5% Senior Notes, due December 2020	Dec. 09, 2011 4.2% Senior Notes, due December 2021 USD ($)	Sep. 30, 2013 Minimum 2.58% Senior Euro Notes, due June 2015	Sep. 30, 2013 Minimum Other borrowings	Sep. 30, 2013 Maximum Other borrowings	Sep. 30, 2013 Letters Of Credit USD ($)	Sep. 30, 2013 Swing line Loans USD ($)	Sep. 30, 2013 Revolving Facility USD ($)	Dec. 31, 2012 Revolving Facility USD ($)	Sep. 30, 2013 Revolving Facility Minimum	Sep. 30, 2013 Revolving Facility Maximum	Sep. 30, 2013 Other borrowings USD ($)	Dec. 31, 2012 Other borrowings USD ($)
Line of Credit Facility [Line Items]
Replaced credit facility due to expire		$ 600,000,000.0
Revolving facility principal amount	700,000,000.0												75,000,000.0	25,000,000.0
Revolving facility expiration date	Jun. 27, 2016
Aggregate commitments of designated borrowers under the Credit Facility	950,000,000.0
Applicable margin over LIBOR															1.05%		0.875%	1.70%
Annual credit facility fee basis point rate spread over LIBOR	0.20%
Leverage ratio																		3.25
Outstanding letters of credit															9,100,000
Current borrowings under revolving facility															20,000,000	21,000,000
Revolving Facility, amount available to borrow															670,900,000
Principal amount of private placement			96,800,000	81,000,000					350,000,000.0
Stated interest rate			2.58%	2.58%		4.50%	4.50%	4.50%	4.20%		0.40%	1.40%
Debt instrument maturity period			Jun. 09, 2015	Jun. 09, 2015		Dec. 15, 2020			Dec. 15, 2021
Debt instrument maximum amount outstanding			750,000,000.0
Repayment, minimum percentage outstanding					5.00%
Debt instrument face amount						300,000,000.0
Net proceeds from debt offering						295,700,000			346,200,000
Debt offering initial discount						1,600,000			900,000
Debt offering underwriting commission						1,900,000			2,300,000
Estimated offering expenses						800,000			600,000
Contingent percentage of principal amount plus accrued and unpaid interest						101.00%			101.00%
Outstanding repayment of indebtedness						250,000,000			306,000,000
Other borrowings																			$ 6,864,000	$ 10,648,000
Number of financial covenants	2
Interest coverage ratio										3.0