FAIR VALUE MEASUREMENT Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Corporate Bond Securities	Sep. 30, 2013 Fixed rate senior notes $450 million due August 2021	Sep. 30, 2013 Estimate of Fair Value, Fair Value Disclosure	Dec. 31, 2012 Estimate of Fair Value, Fair Value Disclosure	Sep. 30, 2013 Carrying (Reported) Amount, Fair Value Disclosure	Dec. 31, 2012 Carrying (Reported) Amount, Fair Value Disclosure	Sep. 30, 2013 Tranche C Unsecured Senior Notes	Sep. 30, 2013 Tranche B Unsecured Senior Notes	Sep. 30, 2013 Tranche A Unsecured Senior Notes	Sep. 30, 2013 Private Placement Notes U.S. Dollar Denominated Expiring March 2016	Sep. 30, 2013 Fixed Rate Senior Notes U.S. Dollar Denominated Due August 2016
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate			40.00%
Long-term debt					$ 1,404,900,000	$ 1,515,200,000	$ 1,379,000,000	$ 1,472,900,000
Senior Notes									450,000,000	300,000,000	250,000,000
Debt, fixed rate				4.10%								4.10%	2.80%
Discount rate			15.00%
Cash Paid For Contingent Consideration	$ 0	$ 2,519,000