Summary of Significant Accounting Policies (Tables)

9 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

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
	June 30, 2019		June 30, 2018		September 30, 2018		September 30, 2017
Cash and cash equivalents	$	533.7	$	506.7	$	452.6	$	558.4
Restricted cash	42.3		7.7		9.6		10.3
Cash, cash equivalents and restricted cash	$	576.0	$	514.4	$	462.2	$	568.7

Schedule of 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
	June 30, 2019		June 30, 2018		September 30, 2018		September 30, 2017
Cash and cash equivalents	$	533.7	$	506.7	$	452.6	$	558.4
Restricted cash	42.3		7.7		9.6		10.3
Cash, cash equivalents and restricted cash	$	576.0	$	514.4	$	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 June 30,		Nine Months Ended June 30,
	2019	2018	2019	2018
Denominator (thousands of shares):
Weighted-average common shares outstanding — basic	174,759	173,991	174,541	173,744
Incremental shares issuable for stock options and awards (a)	—	2,816	2,848	2,958
Weighted-average common shares outstanding — diluted	174,759	176,807	177,389	176,702

(a) For the three months ended June 30, 2019, incremental shares of 2,576 have been excluded as such incremental shares would be antidilutive due to the net loss for the period. For the nine months ended June 30, 2019, there were 244 shares associated with outstanding stock option awards that were excluded from the computation of diluted earnings per share above because their effect was antidilutive. There were no such shares for the three and nine months ended June 30, 2018.