Quarterly report pursuant to Section 13 or 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (Reclassifications Out Of Accumulated Other Comprehensive Income) (Detail)

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ACCUMULATED OTHER COMPREHENSIVE INCOME (Reclassifications Out Of Accumulated Other Comprehensive Income) (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Amortization of pension and other postretirement plan items:        
Total net periodic benefit cost, net of tax $ 2.1 $ 2.3 $ 4.2 $ 5.3
Reclassification out of Accumulated Other Comprehensive Income [Member]
       
Amortization of pension and other postretirement plan items:        
Prior service cost     0.2 [1],[2]  
Recognized actuarial loss     (6.6) [1],[2]  
Total net periodic benefit cost, before tax     (6.4) [1]  
Total net periodic benefit cost, tax benefit     2.4 [1]  
Total net periodic benefit cost, net of tax     $ (4.0) [1]  
[1] Amounts in parentheses indicate expense recognized in the Consolidated Statements of Income.
[2] These accumulated other comprehensive income components are included in the computation of net periodic pension cost (See Note 9 Benefit Plans for additional details).