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Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 25, 2021 | Dec. 30, 2023 | Dec. 31, 2022 | Dec. 25, 2021
Goodwill [Roll Forward] |  |  |  |
Goodwill |  |  | $ 222,822,000 |
Accumulated impairment charges, beginning of year |  |  | (51,492,000) |
Goodwill, net, beginning balance |  | $ 157,588,000 | 171,330,000 |
Reductions |  | (7,007,000) | (11,216,000) |
Currency translation |  | 1,239,000 | (2,526,000) |
Goodwill |  | 203,312,000 |  | $ 222,822,000
Accumulated impairment charges, end of year |  | (51,492,000) |  | (51,492,000)
Goodwill, net, ending balance |  | 151,820,000 | 157,588,000 | 171,330,000
Impairment charges, excluding Turbotec |  | 0 | 0 | 0
Impairment charges | $ 2,100,000 |  |  |
Mueller Middle East |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Decrease in goodwill |  |  | (11,200,000) |
Piping Systems |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill |  |  | 192,316,000 |
Accumulated impairment charges, beginning of year |  |  | (40,552,000) |
Goodwill, net, beginning balance |  | 138,022,000 | 151,764,000 |
Reductions |  | (7,007,000) | (11,216,000) |
Currency translation |  | 1,239,000 | (2,526,000) |
Goodwill |  | 172,806,000 |  | 192,316,000
Accumulated impairment charges, end of year |  | (40,552,000) |  | (40,552,000)
Goodwill, net, ending balance |  | 132,254,000 | 138,022,000 | 151,764,000
Industrial Metals |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill |  |  | 8,854,000 |
Accumulated impairment charges, beginning of year |  |  | (8,853,000) |
Goodwill, net, beginning balance |  | 1,000 | 1,000 |
Reductions |  | 0 | 0 |
Currency translation |  | 0 | 0 |
Goodwill |  | 8,854,000 |  | 8,854,000
Accumulated impairment charges, end of year |  | (8,853,000) |  | (8,853,000)
Goodwill, net, ending balance |  | 1,000 | 1,000 | 1,000
Climate |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill |  |  | 21,652,000 |
Accumulated impairment charges, beginning of year |  |  | (2,087,000) |
Goodwill, net, beginning balance |  | 19,565,000 | 19,565,000 |
Reductions |  | 0 | 0 |
Currency translation |  | 0 | 0 |
Goodwill |  | 21,652,000 |  | 21,652,000
Accumulated impairment charges, end of year |  | (2,087,000) |  | (2,087,000)
Goodwill, net, ending balance |  | $ 19,565,000 | $ 19,565,000 | $ 19,565,000

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