CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 106,232	$ 106,820	$ 87,011	[1],[2]
Other comprehensive income (loss), net of tax:
Foreign currency translation	7,409	(16,876)	13,174
Net change with respect to derivative instruments and hedging activities, net of tax of $(195), $318, and $(541)	690
Net change with respect to derivative instruments and hedging activities, net of tax of $(195), $318, and $(541)		(1,173)	1,147
Net change in pension and postretirement obligation adjustments, net of tax of $(671), $670, and $(1,071)	3,112	(3,339)	2,436
Attributable to unconsolidated affiliates, net of tax of $244, $2,522, and $(505)	(839)	(8,686)	895
Other, net	0	0	(380)
Total other comprehensive income (loss), net	10,372	(30,074)	17,272
Consolidated comprehensive income	116,604	76,746	104,283
Comprehensive income attributable to noncontrolling interests	(4,610)	(1,579)	(2,785)
Comprehensive income attributable to Mueller Industries, Inc.	$ 111,994	$ 75,167	$ 101,498

[1] The Consolidated Statement of Income for 2017 has been adjusted to reflect the adoption of ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost in 2018. The components of net periodic benefit cost (income) other than the service cost component are included in other income, net in the Consolidated Statements of Income.

[2] The Consolidated Statements of Cash Flows for prior periods have been adjusted to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. The Consolidated Statements of Cash Flows reflect the changes during the periods in the total of cash, cash equivalents, and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown.