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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Cash Flows From Operating Activities |  |
Net income | $ 271,860 | $ 249,209
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization expense | 146,020 | 127,856
Deferred income taxes | 29,693 | 11,813
Other | (17,508) | (12,689)
Net assets / liabilities from risk management activities | 218 | (8,834)
Net change in other operating assets and liabilities | (241,383) | (305,531)
Net cash provided by operating activities | 188,900 | 61,824
Cash Flows From Investing Activities |  |
Capital expenditures | (795,660) | (684,180)
Debt and equity securities activities, net | (2,472) | 2,374
Other, net | 5,621 | 2,058
Net cash used in investing activities | (792,511) | (679,748)
Cash Flows From Financing Activities |  |
Net decrease in short-term debt | (184,967) | 0
Net proceeds from equity issuances | 220,000 | 261,943
Issuance of common stock through stock purchase and employee retirement plans | 3,779 | 3,918
Proceeds from issuance of long-term debt | 797,258 | 596,142
Cash dividends paid | (104,552) | (90,411)
Debt issuance costs | (7,864) | (6,386)
Net cash provided by financing activities | 723,654 | 765,206
Net increase in cash and cash equivalents | 120,043 | 147,282
Cash and cash equivalents at beginning of period | 51,554 | 116,723
Cash and cash equivalents at end of period | $ 171,597 | $ 264,005

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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 30 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126928898&loc=d3e9212-128498 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 30 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126928898&loc=d3e9215-128498 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 25 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=127000608&loc=d3e9135-128495 + Details
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