Income Taxes (Tables)

6 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Summary of Changes in Unrecognized Tax Benefits

Changes in unrecognized tax benefits are summarized as follows for the six months ended March 31, 2019.

(In millions)
Balance at October 1, 2018	$	164
Decreases related to positions taken on items from prior years		(3	)
Increases related to positions taken in the current year		3
Lapse of statute of limitations		(2	)
Balance at March 31, 2019	$	162