FAIR VALUE MEASUREMENT Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Corporate Bond Securities	Mar. 31, 2014 Fixed rate senior notes $450 million due August 2021	Mar. 31, 2014 Estimate of Fair Value, Fair Value Disclosure	Dec. 31, 2013 Estimate of Fair Value, Fair Value Disclosure	Mar. 31, 2014 Carrying (Reported) Amount, Fair Value Disclosure	Dec. 31, 2013 Carrying (Reported) Amount, Fair Value Disclosure	Mar. 31, 2014 Tranche C Unsecured Senior Notes	Mar. 31, 2014 Tranche B Unsecured Senior Notes	Mar. 31, 2014 Tranche A Unsecured Senior Notes	Mar. 31, 2014 Private Placement Notes U.S. Dollar Denominated Expiring March 2016	Mar. 31, 2014 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			$ 1,335.2	$ 1,387.7	$ 1,298.4	$ 1,370.8
Senior Notes							$ 450.0	$ 300.0	$ 250.0
Debt, fixed rate		4.10%								4.20%	2.80%
Discount rate	13.00%