Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Assets and Liabilities Recorded at Fair Value (Detail)

v2.4.0.8
Fair Value Measurements - Assets and Liabilities Recorded at Fair Value (Detail) (Significant Other Observable Inputs (Level 2) [Member], USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Significant Other Observable Inputs (Level 2) [Member]
   
Assets:    
Cash surrender value of life insurance policies $ 24.0 $ 21.4
Cash flow swaps designated as hedges 3.0  
Total assets 27.0 21.4
Liabilities:    
Cash flow swaps designated as hedges 21.1 31.4
Cash flow swaps not designated as hedges 2.2 2.9
Deferred compensation plan 15.1 13.8
Total liabilities $ 38.4 $ 48.1