XML 66 R55.htm IDEA: XBRL DOCUMENT v3.5.0.2
Long-Term Debt And Notes Payable (Components Of Debt) (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Debt Instrument [Line Items]          
Debt Instrument, Basis Spread on Variable Rate 5.00%        
Long-term Commercial Paper $ 500.0   $ 500.0    
number of days to maturity 397        
Net decrease in short-term debt     51.3 $ 121.9  
Long-term debt $ 745.0   745.0   $ 744.6
Short-term borrowings $ 100.9   $ 100.9   $ 49.6
2.75% Notes Due 2018          
Debt Instrument [Line Items]          
Maturity Year Of Debt Instrument 2018 2018      
Debt Instrument, Interest Rate, Stated Percentage 2.75%   2.75%   2.75%
Long-term debt $ 249.0   $ 249.0   $ 248.8
Debt Instrument, Face Amount 250.0   250.0   250.0
Amortization of Debt Issuance Costs     1.0   1.2
Other Liabilities [Member]          
Debt Instrument [Line Items]          
Long-term debt 0.0   0.0   0.6
Commercial Paper [Member]          
Debt Instrument [Line Items]          
Long-term debt 100.9   100.9   49.0
Six Point Five Five Percent Notes Due 2036 [Member]          
Debt Instrument [Line Items]          
Long-term debt 198.0   198.0   197.9
Debt Instrument, Face Amount 200.0   200.0   200.0
Amortization of Debt Issuance Costs     1.3   1.4
Debt Instrument, Unamortized Discount (0.7)   (0.7)   (0.7)
Four Point Four Five Percent Notes Due 2023 [Member]          
Debt Instrument [Line Items]          
Long-term debt 298.0   298.0   297.9
Debt Instrument, Face Amount $ 300.0   300.0   300.0
Amortization of Debt Issuance Costs     $ 2.0   $ 2.1
4.45% Notes Due 2023          
Debt Instrument [Line Items]          
Maturity Year Of Debt Instrument 2023 2023      
Debt Instrument, Interest Rate, Stated Percentage 4.45%   4.45%   4.45%
6.55% Notes Due 2036          
Debt Instrument [Line Items]          
Maturity Year Of Debt Instrument 2036 2036      
Debt Instrument, Interest Rate, Stated Percentage 6.55%   6.55%   6.55%