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v3.20.2

Equity and Noncontrolling Interests - Changes in AOCI (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning balance | $ 2,189 | $ 2,717 | $ 4,592
Aggregate adjustment for the period, net of tax | (89) | (38) | (126)
Realized and unrealized gains (losses) on derivatives | (20) | (1) | (10)
Net reclassifications to AOCI | 0 | 2 | (1)
Ending balance | 1,535 | 2,189 | 2,717
Foreign currency translation adjustments |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning balance | (558) | (523) | (398)
Aggregate adjustment for the period, net of tax | (76) | (35) | (125)
Ending balance | (634) | (558) | (523)
Realized and unrealized gains (losses) on derivatives |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning balance | (8) | (7) | 3
Realized and unrealized gains (losses) on derivatives | (34) | (5) | (13)
Reclassification to income, net of tax | 14 | 4 | 3
Ending balance | (28) | (8) | (7)
Pension plans |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning balance | (3) | (1) | (2)
Net reclassifications to AOCI | 0 | (2) | 1
Ending balance | (3) | (3) | (1)
AOCI attributable to parent |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning balance | (569) | (531) | (397)
Realized and unrealized gains (losses) on derivatives | (20) | (1) | (10)
Net reclassifications to AOCI |  | 2 |
Ending balance | $ (665) | $ (569) | $ (531)

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