Summary of Significant Accounting Policies (Computations Of Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended								12 Months Ended
	Dec. 20, 2018	Dec. 31, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Net earnings attributable to Mohawk Industries, Inc.		$ 229,339	$ 227,013	$ 196,586	$ 208,766	$ 240,378	$ 270,025	$ 260,681	$ 200,554	$ 861,704	$ 971,638	$ 930,362
Accretion of redeemable noncontrolling interest										(3,892)	(46)	(123)
Net earnings available to common stockholders										$ 857,812	$ 971,592	$ 930,239
Weighted-average common shares outstanding-basic (in shares)										74,413	74,357	74,104
Add weighted-average dilutive potential common shares - options and RSU’s to purchase common shares, net (in shares)										360	482	464
Weighted-average common shares outstanding-diluted (in shares)										74,773	74,839	74,568
Basic earnings per share (usd per share)		$ 3.07	$ 3.03	$ 2.64	$ 2.80	$ 3.23	$ 3.63	$ 3.51	$ 2.70	$ 11.53	$ 13.07	$ 12.55
Diluted earnings per share (usd per share)		$ 3.05	$ 3.02	$ 2.62	$ 2.78	$ 3.21	$ 3.61	$ 3.48	$ 2.68	$ 11.47	$ 12.98	$ 12.48
Put option of redeemable noncontrolling interest	$ 33,884									$ 0