Summary of Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2021

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.

	March 31, 2021		March 31, 2020		September 30, 2020		September 30, 2019
Cash and cash equivalents	$	444	$	297	$	336	$	447
Restricted cash	28		104		21		64
Cash, cash equivalents and restricted cash	$	472	$	401	$	357	$	511

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.

	March 31, 2021		March 31, 2020		September 30, 2020		September 30, 2019
Cash and cash equivalents	$	444	$	297	$	336	$	447
Restricted cash	28		104		21		64
Cash, cash equivalents and restricted cash	$	472	$	401	$	357	$	511

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,
	2021	2020	2021	2020
Denominator (thousands of shares):
Weighted-average common shares outstanding — basic	208,930	208,941	208,849	209,151
Incremental shares issuable for stock options and awards (a)	1,162	867	1,014	1,343
Weighted-average common shares outstanding — diluted	210,092	209,808	209,863	210,494

(a)For the three and six months ended March 31, 2021 and 2020, there were 5,102 and 8,020 shares, respectively, associated with outstanding stock option awards that were excluded from the computation of diluted earnings per share above because their effect was antidilutive.