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COMMITMENTS AND CONTINGENCIES (Details) ₺ in Millions, € in Millions, $ in Millions | 1 Months Ended | 12 Months Ended | 24 Months Ended | 33 Months Ended |  |
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Jun. 30, 2021 USD ($) | Jun. 30, 2021 EUR (€) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 EUR (€) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 TRY (₺) | Aug. 31, 2021 USD ($) | Aug. 31, 2021 EUR (€) | Mar. 31, 2023 USD ($) | Mar. 31, 2023 EUR (€) | Mar. 31, 2023 TRY (₺) | Dec. 31, 2022 EUR (€) | Dec. 31, 2022 TRY (₺)
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits |  |  |  |  | $ 184 |  |  |  |  |  | $ 58 |  |  |  |
Partner liability insurance maximum coverage per occurrence |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |
Standby Letters of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of credit and bank guarantees issued |  |  |  |  | 452 |  |  |  |  |  | 786 |  |  |  |
Italian Tax Audit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits |  |  |  |  | 19 |  |  |  |  |  | 19 | € 18 |  | € 18 |
Italian Tax Audit | Tax Years 2013 Through 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessments |  |  |  |  |  |  |  |  | $ 273 | € 251 |  |  |  |  |
Italian Tax Audit | Tax Year 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment required to appeal a litigation matter or avoid collection enforcement |  |  | $ 11 | € 10 |  |  |  |  |  |  |  |  |  |  |
Italian Tax Audit | Tax Years 2014 Through 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment required to appeal a litigation matter or avoid collection enforcement |  |  |  |  | 70 | € 64 |  |  |  |  |  |  |  |  |
Italian Tax Audit | Tax Years 2013 through 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recommended tax assessment | $ 167 | € 154 |  |  |  |  |  |  |  |  |  |  |  |  |
Italian Tax Audit | Tax Years 2013 Through 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, current |  |  |  |  | 47 |  |  |  |  |  | 77 | 71 |  | € 44 |
Turkish Tax Audit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, current |  |  |  |  |  |  |  |  |  |  | 11 |  | ₺ 210 |  |
Prepaid assessments required to appeal a litigation matter |  |  |  |  | $ 6 |  |  |  |  |  | 8 |  | ₺ 149 |  | ₺ 118
Turkish Tax Audit | Tax Years 2012 Through 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessments |  |  |  |  |  |  | $ 44 | ₺ 845 |  |  |  |  |  |  |
Pension-related litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated reasonably possible loss in excess of amount accrued |  |  |  |  |  |  |  |  |  |  | $ 395 | € 364 |  |  |

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