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Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Mar. 31, 2022
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, 2022 |  | March 31, 2021
Cash and cash equivalents |  | $ | 718 |  |  | $ | 444 |
Restricted cash |  | 55 |  |  | 28 |
Cash, cash equivalents and restricted cash |  | $ | 773 |  |  | $ | 472 |
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, 2022 |  | March 31, 2021
Cash and cash equivalents |  | $ | 718 |  |  | $ | 444 |
Restricted cash |  | 55 |  |  | 28 |
Cash, cash equivalents and restricted cash |  | $ | 773 |  |  | $ | 472 |
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,
|  | 2022 |  | 2021 |  | 2022 |  | 2021
Denominator (thousands of shares): |  |  |  |  |  |  |  |
Weighted-average common shares outstanding — basic |  | 210,163 |  |  | 208,930 |  |  | 209,919 |  |  | 208,849 |
Incremental shares issuable for stock options, common stock awards and Equity Units (a) |  | 5,765 |  |  | 1,162 |  |  | 6,017 |  |  | 1,014 |
Weighted-average common shares outstanding — diluted |  | 215,928 |  |  | 210,092 |  |  | 215,936 |  |  | 209,863 |
(a)For the three and six months ended March 31, 2022 and 2021, there were 6,535 and 5,102 shares, respectively, associated with outstanding stock option awards that were not included in the computation of diluted earnings per share above because their effect was antidilutive.

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