XML 137 R92.htm IDEA: XBRL DOCUMENT v2.4.0.8
Retirement Plans and Other Post-Retirement Benefits - Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Pension Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Actuarial (gain) loss $ (84.7) $ 20.6  
Prior service cost   5.5  
Amortization of prior service cost (3.1) (2.5) (2.6)
Amortization of actuarial losses (21.1) (17.0) (13.3)
Total recognized in other comprehensive (income) loss (108.9) 6.6  
Total recognized in net periodic benefit cost and other comprehensive (income) loss (94.7) 18.2  
Other Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Actuarial (gain) loss (10.5) 4.0  
Amortization of prior service cost 0.5 0.9 1.2
Amortization of actuarial losses (0.6) (0.7) (0.9)
Total recognized in other comprehensive (income) loss (10.6) 4.2  
Total recognized in net periodic benefit cost and other comprehensive (income) loss $ (5.5) $ 8.7