Income Taxes - Summary, Reconciliation and Other (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 277.0	$ 418.9	$ 362.9
State	73.8	112.9	98.0
Foreign	33.6	61.1	28.6
Total	384.4	592.9	489.5
Deferred:
Federal	18.0	(3.7)	(20.2)
State	0.3	(2.0)	(4.0)
Foreign	(2.1)	(1.0)	0.4
Total	16.2	(6.7)	(23.8)
Income tax provision	400.6	586.2	465.7
Components of U.S. and international income before income taxes
US	1,579.4	2,199.2	1,778.5
International	161.3	231.2	104.6
Income before income taxes	$ 1,740.7	$ 2,430.4	$ 1,883.1
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)	3.40%	3.50%	3.80%
Foreign earnings taxed at (lower) higher rates (as a percent)	(0.10%)	0.50%	0.40%
Net effect of life insurance policies (as a percent)	(1.10%)	(0.60%)	(0.80%)
Net effect of changes in unrecognized tax benefits (as a percent)			0.10%
Stock-based compensation (as a percent)			0.30%
Other, net (as a percent)	(0.20%)	(0.30%)	(0.10%)
Effective tax rate (as a percent)	23.00%	24.10%	24.70%
Deferred tax assets:
Allowance for doubtful accounts	$ 6.8	$ 6.6
Inventory costs capitalized for tax purposes	13.1	12.0
LIFO inventories		0.7
Accrued expenses not currently deductible for tax	32.0	29.2
Stock-based compensation	12.7	11.1
Net operating loss carryforwards	2.5	3.2
Tax credits carryforwards	0.4	0.7
Total deferred tax assets	67.5	63.5
Deferred tax liabilities:
Property, plant and equipment, net	(208.4)	(196.8)
Goodwill and other intangible assets	(342.8)	(340.9)
LIFO inventories	(6.3)
Other	(4.0)	(2.4)
Total deferred tax liabilities	(561.5)	(540.1)
Net deferred tax liabilities	(494.0)	$ (476.6)
State
Income Taxes
Operating Loss Carryforwards	3.0
Federal.
Income Taxes
Operating Loss Carryforwards	$ 0.1