Summary of Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2019

Restrictions on Cash and Cash Equivalents

The following table provides a reconciliation of the total cash, cash equivalents and restricted cash reported on the Condensed Consolidated Balance Sheets to the corresponding amounts reported on the Condensed Consolidated Statements of Cash Flows.



	Cash, Cash Equivalents and Restricted Cash
	March 31, 2019		March 31, 2018		September 30, 2018		September 30, 2017
Cash and cash equivalents	$	492.1	$	474.8	$	452.6	$	558.4
Restricted cash	26.3		10.6		9.6		10.3
Cash, cash equivalents and restricted cash	$	518.4	$	485.4	$	462.2	$	568.7

Schedule of Cash and Cash Equivalents



	Cash, Cash Equivalents and Restricted Cash
	March 31, 2019		March 31, 2018		September 30, 2018		September 30, 2017
Cash and cash equivalents	$	492.1	$	474.8	$	452.6	$	558.4
Restricted cash	26.3		10.6		9.6		10.3
Cash, cash equivalents and restricted cash	$	518.4	$	485.4	$	462.2	$	568.7

Shares Used in Computing Basic and Diluted Earnings Per Share

Shares used in computing basic and diluted earnings per share are as follows:



	Three Months Ended March 31,		Six Months Ended March 31,
	2019	2018	2019	2018
Denominator (thousands of shares):
Weighted-average common shares outstanding — basic	174,501	173,570	174,461	173,617
Incremental shares issuable for stock options and awards (a)	2,817	2,780	2,985	3,029
Weighted-average common shares outstanding — diluted	177,318	176,350	177,446	176,646

(a)

For the three and six months ended March 31, 2019, there were 208 shares associated with outstanding stock option awards that were excluded from the computation of diluted earnings per share above because their effect was antidilutive. For the three and six months ended March 31, 2018, there were 2,486 shares associated with outstanding stock option awards that were excluded from the computation of diluted earnings per share above because their effect was antidilutive.