Financial Instruments - Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Increase (decrease) in fair value:
Interest rate agreements	$ (29,937)	$ 121,140	$ (7,276)	$ 74,518
Recognition of (gains) losses in earnings due to settlements:
Interest rate agreements	(530)	744	(1,060)	1,488
Total other comprehensive income (loss) from hedging, net of tax	$ (30,467)	$ 121,884	$ (8,336)	$ 76,006

Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580

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