Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net earnings	$ 287.1	$ 239.7	$ 556.7	$ 450.3
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation of property and equipment	41.2	39.6	82.4	78.9
Loss (gain) on sale of property and equipment	(1.2)	(0.7)	2.3	(1.3)
Bad debt expense	0.7	0.0	0.4	(0.1)
Deferred income taxes	(0.5)	0.4	0.5	0.7
Stock-based compensation	1.5	1.4	3.0	2.9
Amortization of intangible assets	2.7	2.7	5.4	5.4
Changes in operating assets and liabilities:
Trade accounts receivable	(39.4)	(55.9)	(209.3)	(138.0)
Inventories	(74.2)	(20.5)	(150.6)	10.6
Other current assets	(1.8)	(22.7)	58.9	(6.4)
Accounts payable	1.9	21.0	58.7	29.1
Accrued expenses	0.5	12.1	(29.6)	5.8
Income taxes	(67.6)	(45.8)	2.0	8.1
Other	0.3	0.2	0.4	0.3
Net cash provided by operating activities	151.2	171.5	381.2	446.3
Cash flows from investing activities:
Purchases of property and equipment	(47.5)	(34.6)	(83.0)	(67.3)
Proceeds from sale of property and equipment	4.1	3.1	6.5	5.8
Other	(0.5)	0.0	(0.6)	0.1
Net cash used in investing activities	(43.9)	(31.5)	(77.1)	(61.4)
Cash flows from financing activities:
Proceeds from debt obligations	460.0	55.0	695.0	165.0
Payments against debt obligations	(320.0)	(55.0)	(580.0)	(165.0)
Proceeds from exercise of stock options	1.9	7.0	5.8	13.6
Purchases of common stock	(49.3)	0.0	(49.3)	0.0
Payments of dividends	(178.5)	(160.8)	(356.9)	(321.6)
Net cash used in financing activities	(85.9)	(153.8)	(285.4)	(308.0)
Effect of exchange rate changes on cash and cash equivalents	(7.7)	1.7	(7.0)	(0.8)
Net increase (decrease) in cash and cash equivalents	13.7	(12.1)	11.7	76.1
Cash and cash equivalents at beginning of period	234.2	333.9	236.2	245.7
Cash and cash equivalents at end of period	247.9	321.8	247.9	321.8
Supplemental information:
Cash paid for interest	2.7	2.6	5.0	5.0
Net cash paid for income taxes	160.2	120.3	175.4	132.7
Leased assets obtained in exchange for new operating lease liabilities	$ 31.7	$ 34.7	$ 55.6	$ 65.6