Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net earnings	$ 1,155.0	$ 1,086.9	$ 925.0
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation of property and equipment	166.6	165.9	159.9
(Gain) loss on sale of property and equipment	(4.3)	1.1	(1.1)
Bad debt expense (recoveries)	2.2	(1.8)	2.5
Deferred income taxes	(10.7)	(4.9)	(13.7)
Stock-based compensation	7.3	7.2	5.6
Amortization of intangible assets	10.7	10.7	10.8
Changes in operating assets and liabilities:
Trade accounts receivable	(72.3)	(119.8)	(135.2)
Inventories	189.1	(198.0)	(189.5)
Other current assets	(6.4)	22.7	(47.8)
Accounts payable	8.4	21.9	26.1
Accrued expenses	(0.6)	(57.2)	26.2
Income taxes	(9.4)	0.4	(1.8)
Other	(2.9)	5.9	3.1
Net cash provided by operating activities	1,432.7	941.0	770.1
Cash flows from investing activities:
Purchases of property and equipment	(172.8)	(173.8)	(156.6)
Proceeds from sale of property and equipment	12.2	11.4	8.4
Other	(0.6)	(0.6)	(0.3)
Net cash used in investing activities	(161.2)	(163.0)	(148.5)
Cash flows from financing activities:
Proceeds from debt obligations	880.0	1,795.0	525.0
Payments against debt obligations	(1,175.0)	(1,630.0)	(540.0)
Proceeds from exercise of stock options	30.1	9.2	31.6
Purchases of common stock	0.0	(237.8)	0.0
Cash dividends paid	(1,016.8)	(711.3)	(643.7)
Net cash used in financing activities	(1,281.7)	(774.9)	(627.1)
Effect of exchange rate changes on cash and cash equivalents	1.4	(9.2)	(4.0)
Net decrease in cash and cash equivalents	(8.8)	(6.1)	(9.5)
Cash and cash equivalents at beginning of year	230.1	236.2	245.7
Cash and cash equivalents at end of year	221.3	230.1	236.2
Supplemental information:
Cash paid for interest	12.2	13.3	9.9
Net cash paid for income taxes	$ 383.0	$ 354.1	$ 294.0