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v3.19.2

Equity Items - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Equity [Abstract] |  |  |  |  |
Unrealized translation gain (loss), before tax |  | $ 3 | $ (140) | $ (37) | $ (82)
Unrealized translation gain (loss), tax |  | 0 | 0 | 0 | 0
Unrealized translation gain (loss), net of tax |  | 3 | (140) | (37) | (82)
Adjustment of unrecognized prior service cost (credit), before tax |  | 0 | 0 | (7) | 0
Adjustment of unrecognized prior service cost (credit), tax |  | 0 | 0 | 1 | 0
Adjustment of unrecognized prior service cost (credit), net of tax |  | 0 | 0 | (6) | 0
Unrealized gain on investment, before taxes | [1] | 0 | 4 | 0 | 10
Unrealized gain on investment, tax | [1] | 0 | (2) | 0 | (3)
Unrealized gain on investment, net of tax | [1] | 0 | 2 | 0 | 7
Reclassification adjustment for gains included in net income, before tax |  | 0 | 0 | 0 | (4)
Reclassification adjustment for gains included in net income, tax |  | 0 | 0 | 0 | 1
Reclassification adjustment for gains included in net income, net of tax |  | 0 | 0 | 0 | (3)
Total other comprehensive income (loss), before tax |  | 3 | (136) | (44) | (76)
Total other comprehensive income (loss), tax |  | 0 | (2) | 1 | (2)
Other comprehensive income (loss) |  | $ 3 | $ (138) | $ (43) | $ (78)
[1] | Due to the adoption of new accounting guidance in fiscal 2019, unrealized gains and losses on Ashland’s equity securities are now recognized in net income rather than AOCI. See Notes A and E for more information.

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