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Debt - Credit Facility Additional Information (Details) - USD ($) | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022 | Oct. 18, 2019
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount |  |  | $ 1,200,000,000
Line of credit facility, maximum borrowing capacity |  |  | 500,000,000
Credit Facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, maximum borrowing capacity | $ 500,000,000 | $ 500,000,000 |
Letters of credit outstanding, amount | 61,635,000 | 55,990,000 |
Line of credit facility, remaining borrowing capacity | $ 238,400,000 |  |
Fed Funds Effective Rate Overnight Index Swap Rate [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 0.50% |  |
Alternate base rate (3) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate | 1.00% |  |
Debt instrument, description of variable rate basis | one-month LIBOR |  |
London Interbank Offered Rate |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, description of variable rate basis | the LIBOR rate |  |
EURIBOR [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, description of variable rate basis | EURIBOR rate |  |
Alternate base rate [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, description of variable rate basis | Alternate Base Rate |  |
Alternate base rate (1) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, description of variable rate basis | the prime rate |  |
Alternate base rate (2) [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, description of variable rate basis | the Federal Reserve effective rate |  |
USD Denominated Term Loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount |  |  | 650,000,000
Standby Letters of Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, maximum borrowing capacity |  |  | 300,000,000
Letters of credit outstanding, amount | $ 61,600,000 |  |
Swingline sub-facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, maximum borrowing capacity |  |  | $ 50,000,000
Multicurrency revolving line of credit | 0 |  |
Line of Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Multicurrency revolving line of credit | 0 | 0 |
Line of credit facility, remaining borrowing capacity | $ 438,365,000 | $ 444,010,000 |
Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, collateral | All obligations under the 2018 credit facility are guaranteed by Itron, Inc. and material U.S. domestic subsidiaries and are secured by a pledge of substantially all of the assets of Itron, Inc. and material U.S. domestic subsidiaries. This includes a pledge of 100% of the capital stock of material U.S. domestic subsidiaries and up to 66% of the voting stock (100% of the non-voting stock) of first-tier foreign subsidiaries. In addition, the obligations of any foreign subsidiary who is a foreign borrower, as defined by the 2018 credit facility, are guaranteed by the foreign subsidiary and by its direct and indirect foreign parents. |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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