Summary of Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Data [Abstract]
Net sales	$ 4,701,000	$ 4,160,000	$ 4,294,000	$ 3,953,000	$ 4,262,000	$ 3,737,000	$ 2,764,000	$ 3,588,000	$ 17,108,000	$ 14,351,000	$ 14,884,000
Gross profit	3,045,000	2,642,000	2,772,000	2,509,000	2,717,000	2,461,000	1,548,000	2,331,000	10,968,000	9,057,000	9,696,000
Earnings (loss) before income taxes	757,000	495,000	662,000	367,000	671,000	780,000	(87,000)	590,000	2,281,000	1,954,000	2,562,000
Net earnings (loss)	$ 662,000	$ 438,000	$ 592,000	$ 302,000	$ 568,000	$ 621,000	$ (83,000)	$ 493,000	$ 1,994,000	$ 1,599,000	$ 2,083,000
Basic net earnings per share of common stock (in dollars per share)	$ 1.75	$ 1.17	$ 1.57	$ 0.80	$ 1.51	$ 1.66	$ (0.22)	$ 1.32	$ 5.29	$ 4.26	$ 5.57
Diluted net earnings per share of common stock (in dollars per share)	1.73	1.14	1.55	0.79	1.49	1.63	(0.22)	1.30	$ 5.21	$ 4.20	$ 5.48
Dividends declared per share of common stock (in dollars per share)	$ 0.695	$ 0.630	$ 0.630	$ 0.630	$ 0.630	$ 0.575	$ 0.575	$ 0.575