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Income Taxes - Summary, Reconciliation and Other (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Current:      
Federal $ 91.1 $ 129.5 $ 153.2
State 18.9 21.3 25.2
Foreign 10.6 8.8 9.8
Total 120.6 159.6 188.2
Deferred:      
Federal 3.0 (11.7) (18.7)
State 1.0 (4.5) (2.2)
Foreign (4.5) (0.9) 2.7
Total (0.5) (17.1) (18.2)
Income tax provision 120.1 142.5 170.0
Components of U.S. and international income before income taxes      
US 411.0 427.3 488.5
International 18.2 31.4 57.8
Income before income taxes $ 429.2 $ 458.7 $ 546.3
Reconciliation of income tax at the U.S. federal statutory tax rates to income tax expense      
Income tax at U.S. federal statutory tax rate (as a percent) 35.00% 35.00% 35.00%
State income tax, net of federal tax effect (as a percent) 3.10% 2.00% 2.60%
Foreign earnings taxed at lower rates (0.80%) (0.80%) (1.90%)
Net effect of life insurance policies (as a percent) (4.20%) (3.60%) (2.60%)
Net effect of changes in unrecognized tax benefits (as a percent) (4.30%) 0.70% 0.20%
Domestic production activity deduction (as a percent) (1.70%) (2.00%) (1.70%)
Other, net (as a percent) 0.90% (0.20%) (0.50%)
Effective tax rate (as a percent) 28.00% 31.10% 31.10%
Deferred tax assets:      
Accrued expenses not currently deductible for tax $ 77.6 $ 75.0  
Inventory costs capitalized for tax purposes 29.2 27.1  
Share-based compensation 12.0 17.1  
Allowance for doubtful accounts 5.3 5.5  
Tax credits carryforwards 1.3 1.1  
Net operating loss carryforwards 4.7 5.4  
Total deferred tax assets 130.1 131.2  
Deferred tax liabilities:      
Property, plant and equipment, net (238.6) (245.5)  
Goodwill and other intangible assets (451.2) (458.2)  
LIFO inventories (54.1) (34.0)  
Deferred income (7.1) (13.4)  
Other (6.0) (7.2)  
Total deferred tax liabilities (757.0) (758.3)  
Net deferred tax liabilities $ (626.9) $ (627.1)