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Income Taxes - Summary, Reconciliation and Other (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Current:      
Federal $ 362.9 $ 77.6 $ 136.3
State 98.0 24.9 37.9
Foreign 28.6 17.0 16.5
Total 489.5 119.5 190.7
Deferred:      
Federal (20.2) (7.1) 26.9
State (4.0) 0.3 7.2
Foreign 0.4 (6.9) (1.6)
Total (23.8) (13.7) 32.5
Income tax provision 465.7 105.8 223.2
Components of U.S. and international income before income taxes      
US 1,778.5 465.9 877.4
International 104.6 12.3 51.9
Income before income taxes $ 1,883.1 $ 478.2 $ 929.3
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) 21.00% 21.00% 21.00%
State income tax, net of federal tax effect (as a percent) 3.80% 3.60% 3.60%
Foreign earnings taxed at higher rates (as a percent) 0.40% 1.00% 0.40%
Net effect of life insurance policies (as a percent) (0.80%) (2.90%) (1.50%)
Net effect of changes in unrecognized tax benefits (as a percent) 0.10% (0.30%)  
Stock-based compensation (as a percent) 0.30% 0.80% 0.70%
Other, net (as a percent) (0.10%) (1.10%) (0.20%)
Effective tax rate (as a percent) 24.70% 22.10% 24.00%
Deferred tax assets:      
Accrued expenses not currently deductible for tax $ 36.9 $ 42.3  
Inventory costs capitalized for tax purposes 12.9 9.0  
Share-based compensation 10.1 8.6  
Allowance for doubtful accounts 6.6 4.8  
Tax credits carryforwards 0.9 0.4  
Net operating loss carryforwards 3.9 3.6  
Total deferred tax assets 71.3 68.7  
Deferred tax liabilities:      
Property, plant and equipment, net (183.1) (190.2)  
Goodwill and other intangible assets (342.0) (297.1)  
LIFO inventories (25.0) (29.7)  
Other (6.0) (7.3)  
Total deferred tax liabilities (556.1) (524.3)  
Net deferred tax liabilities (484.8) $ (455.6)  
State      
Income Taxes      
Operating Loss Carryforwards 4.2    
Federal.      
Income Taxes      
Operating Loss Carryforwards $ 0.6