DEBT - Schedule of Long-Term Debt (Detail) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Total debt	$ 1,272,700,000	$ 1,356,084,000
Less: current portion of total debt	79,589,000	87,781,000
Long-term portion of total debt	1,193,111,000	1,268,303,000
Obligations under capital leases
Debt Instrument [Line Items]
Total debt	4,299,000	5,234,000
$1 billion revolver weighted average rate 1.53%, due in 2016
Debt Instrument [Line Items]
Total debt	175,977,000	225,931,000
$100 million Private Placement notes 5.64%, due in 2015
Debt Instrument [Line Items]
Total debt	100,000,000	100,000,000
$175 million Private Placement notes 3.89%, due in 2017
Debt Instrument [Line Items]
Total debt	175,000,000	175,000,000
$125 million Private Placement notes 2.68%, due in 2019
Debt Instrument [Line Items]
Total debt	125,000,000	125,000,000
$225 million Private Placement notes 4.47%, due in 2020
Debt Instrument [Line Items]
Total debt	225,000,000	225,000,000
$125 million Private Placement notes 3.26%, due in 2022
Debt Instrument [Line Items]
Total debt	125,000,000	125,000,000
Acquisition notes weighted average rate of 2.58% and weighted average maturity of 3.6 years
Debt Instrument [Line Items]
Total debt	239,396,000	235,856,000
Foreign bank debt weighted average rate 4.93% and weighted average maturity of 1.7 years
Debt Instrument [Line Items]
Total debt	$ 103,028,000	$ 139,063,000