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INCOME TAXES Part 2 (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income Tax Contingency [Line Items] |  |  |  |
Undistributed Earnings of Foreign Subsidiaries | $ 1,300 | $ 1,200 |  |
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount |  | 71 |  |
Reconciliation of beginning and ending amounts of unrecognized tax benefits [Roll Forward] |  |  |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 10 | 6 | $ 4 | $ 4
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 1 | 1 | 1 | $ 1
Unrecognized Tax Benefits, Interest on Income Taxes Expense | 4 | 3 | 1 |
Interest income, net of tax associated with expiration of statute of limitations | 0 | 1 | 1 |
Unrecognized Tax Benefits, Income Tax Penalties Expense | 0 | 0 | 0 |
Foreign Country [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Valuation allowance on deferred tax asset resulting from net operating loss carryforwards | 304 |  |  |
United States [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Valuation allowance on deferred tax asset resulting from net operating loss carryforwards | 20 |  |  |
Reconciliation of beginning and ending amounts of unrecognized tax benefits [Roll Forward] |  |  |  |
Beginning Balance | 142 | 114 | 125 |
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 44 | 29 |  |
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions |  |  | (7) |
Lapse of statute of limitations | (4) | (1) | (4) |
Ending Balance | 182 | $ 142 | $ 114 |
State and Local Jurisdiction [Member] | Solutia [Member] |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Valuation allowance on deferred tax asset resulting from net operating loss carryforwards | 54 |  |  |
Maximum [Member] |  |  |  |
Reconciliation of beginning and ending amounts of unrecognized tax benefits [Roll Forward] |  |  |  |
Unrecognized tax benefits that would impact effective tax rate, if recognized | $ 8 |  |  |

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