Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Items Measured at Fair Value on Recurring Basis) (Detail)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Items Measured at Fair Value on Recurring Basis) (Detail) - Fair Value, Measurements, Recurring
$ in Millions
Sep. 30, 2015
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]  
Deferred Compensation Plan Assets $ 23.8 [1]
Deferred Compensation Plan Liability (23.8) [1]
Total 0.0
Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]  
Deferred Compensation Plan Assets 23.8 [1]
Deferred Compensation Plan Liability 0.0
Total 23.8
Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]  
Deferred Compensation Plan Assets 0.0
Deferred Compensation Plan Liability (23.8) [1]
Total (23.8)
Significant Unobservable Inputs (Level 3)  
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]  
Deferred Compensation Plan Assets 0.0
Deferred Compensation Plan Liability 0.0
Total $ 0.0
[1] We maintain deferred compensation plans that allow for certain management employees to defer the receipt of compensation (such as salary, incentive compensation and commissions) until a later date based on the terms of the plan. The liability representing benefits accrued for plan participants is valued at the quoted market prices of the participants’ investment elections. The asset consists of mutual funds reflective of the partcipants’ investment selections and is valued at daily quoted market prices.