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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Schedule of Fair Value of Plan Assets by Category (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Significant unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | $ 16 | $ 20
Fair Value, Measurements, Recurring | Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 2,009 | 2,102
Fair Value, Measurements, Recurring | Pension Benefits | Cash and cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 178 | 159
Fair Value, Measurements, Recurring | Pension Benefits | Government and government agency securities, U.S. securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 75 | 82
Fair Value, Measurements, Recurring | Pension Benefits | Government and government agency securities, International securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 39 | 42
Fair Value, Measurements, Recurring | Pension Benefits | Corporate bonds and notes, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 1,094 | 1,194
Fair Value, Measurements, Recurring | Pension Benefits | Corporate bonds and notes, international companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 154 | 187
Fair Value, Measurements, Recurring | Pension Benefits | Equity securities, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Equity securities, International companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 8 | 11
Fair Value, Measurements, Recurring | Pension Benefits | Mutual funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 71 | 73
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 227 | 166
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 119 | 123
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, Short-term investment fund |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, International debt securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Investments at net asset value, Real estate |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Limited partnerships, U.S. private equity investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 15 | 17
Fair Value, Measurements, Recurring | Pension Benefits | Limited partnerships, Diversified fund of funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 1
Fair Value, Measurements, Recurring | Pension Benefits | Limited partnerships, Emerging growth |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 2 | 2
Fair Value, Measurements, Recurring | Pension Benefits | All other investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 27 | 45
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 8 | 11
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Cash and cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Government and government agency securities, U.S. securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Government and government agency securities, International securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Corporate bonds and notes, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Corporate bonds and notes, international companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Equity securities, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Equity securities, International companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 8 | 11
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Mutual funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, Short-term investment fund |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, International debt securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Investments at net asset value, Real estate |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Limited partnerships, U.S. private equity investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Limited partnerships, Diversified fund of funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | Limited partnerships, Emerging growth |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Quoted prices (Level 1) | All other investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 1,638 | 1,782
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Cash and cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 178 | 159
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Government and government agency securities, U.S. securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 75 | 82
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Government and government agency securities, International securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 39 | 42
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Corporate bonds and notes, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 1,094 | 1,194
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Corporate bonds and notes, international companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 154 | 187
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Equity securities, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Equity securities, International companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Mutual funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 71 | 73
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, Short-term investment fund |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, International debt securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Investments at net asset value, Real estate |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Limited partnerships, U.S. private equity investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Limited partnerships, Diversified fund of funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | Limited partnerships, Emerging growth |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Other significant observable inputs (Level 2) | All other investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 27 | 45
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 17 | 20
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Cash and cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Government and government agency securities, U.S. securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Government and government agency securities, International securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Corporate bonds and notes, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Corporate bonds and notes, international companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Equity securities, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Equity securities, International companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Mutual funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, Short-term investment fund |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, International debt securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Investments at net asset value, Real estate |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Limited partnerships, U.S. private equity investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 15 | 17
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Limited partnerships, Diversified fund of funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 1
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | Limited partnerships, Emerging growth |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 2 | 2
Fair Value, Measurements, Recurring | Pension Benefits | Significant unobservable inputs (Level 3) | All other investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 346 | 289
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Cash and cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Government and government agency securities, U.S. securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Government and government agency securities, International securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Corporate bonds and notes, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Corporate bonds and notes, international companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Equity securities, U.S. companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Equity securities, International companies |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Mutual funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, U.S. equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 227 | 166
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 119 | 123
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, Short-term investment fund |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, International debt securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, International equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Investments at net asset value, Real estate |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Limited partnerships, U.S. private equity investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Limited partnerships, Diversified fund of funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | Limited partnerships, Emerging growth |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Fair Value, Measurements, Recurring | Pension Benefits | Net Asset Value | All other investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | $ 0 | $ 0

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember
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Data Type: | na
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