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INCOME TAXES (Tables)
9 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]  
Summary of Changes in Unrecognized Tax Benefits
Changes in unrecognized tax benefits are summarized as follows for the nine months ended June 30, 2017.
 (In millions)
 

Balance at October 1, 2016
$
168

Increases related to positions taken on items from prior years
6

Decreases related to positions taken on items from prior years
(2
)
Increases related to positions taken in the current year
12

Pharmachem acquisition
12

Lapse of the statute of limitations
(3
)
Settlement of uncertain tax positions with tax authorities
(1
)
Balance at June 30, 2017
$
192