Income Taxes (Tables)

6 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Summary of Changes in Reserve for Uncertain Tax Position

The following table sets forth the changes in the reserve for uncertain tax positions during the six months ended March 31, 2019 (in millions):

Balance at beginning of fiscal year	$	127.1
Additions related to purchase accounting (1)		1.0
Additions for tax positions taken in current year (2)		102.8
Additions for tax positions taken in prior fiscal years		1.0
Additions for currency translation adjustments		0.6
Reductions as a result of a lapse of the applicable statute of    limitations		(0.7	)
Balance at March 31, 2019	$	231.8

⁽¹⁾ Adjustment in fiscal 2019 relates to the KapStone Acquisition.

⁽²⁾ Additions for tax positions taken in current fiscal year includes primarily positions taken related to foreign subsidiaries.