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RECEIVABLES, NET Allowance for Credit Losses Rollforward (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 30, 2024 | Apr. 01, 2023
Credit Loss [Abstract] |  |
Total allowance for credit losses - January 1 | $ 14.2 | $ 12.2
Charges to income | 1.4 | 1.2
Write-offs | (0.6) | (0.3)
Foreign currency and other | (0.1) | 0.0
Total allowance for credit losses - ending balance | $ 14.9 | $ 13.1

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- Definition Allowance for Credit Loss, Foreign Currency and Other + References No definition available. + Details
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- Definition Total Allowance for Credit Losses + References No definition available. + Details
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Namespace Prefix: | itt_
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Balance Type: | credit
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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Period Type: | duration

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- References No definition available. + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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