Fair Value Measurements (Tables)	6 Months Ended
Aug. 31, 2023
Fair Value Disclosures [Abstract]
Fair value assets and liabilities measured on recurring basis	The following tables set forth our financial assets as of August 31, 2023 and February 28, 2023 that we measured at fair value on a recurring basis by level within the fair value hierarchy. Assets measured at fair value are classified in their entirety based on the lowest level of input that is significant to their fair value measurement. Fair Value Measurements at August 31, 2023 Using Fair Value Hierarchy Fair Value as ofAugust 31, 2023Quoted Pricesin ActiveMarkets forIdenticalAssets(Level 1)SignificantOtherObservableInputs(Level 2)SignificantUnobservableInputs(Level 3)ValuationTechniqueAssets:Cash and cash equivalents$726,428 $726,428 $— $— MarketInvestment in debt securities5,029 — — 5,029 IncomeInvestment in equity securities5,757 2,313 — 3,444 Market/IncomeTotal$737,214 $728,741 $— $8,473 Fair Value Measurements at February 28, 2023Using Fair Value Hierarchy Fair Value as of February 28, 2023Quoted Pricesin ActiveMarkets forIdenticalAssets(Level 1)SignificantOtherObservableInputs(Level 2)SignificantUnobservableInputs(Level 3)ValuationTechniqueAssets:Cash and cash equivalents$231,861 $231,861 $— $— MarketInvestment in debt securities5,029 — — 5,029 IncomeInvestment in equity securities5,790 2,346 — 3,444 Market/IncomeTotal$242,680 $234,207 $— $8,473
Carrying amounts and fair values of financial instruments	The carrying amounts and fair values of our financial instruments at August 31, 2023, and February 28, 2023 were as follows:August 31, 2023February 28, 2023Carrying Amountof AssetFair Valueof AssetCarrying Amountof AssetFair Valueof AssetInvestment in debt securities$5,029 $5,029 $5,029 $5,029 Investment in equity securities5,757 5,757 5,790 5,790 Carrying Amountof LiabilityFair Valueof LiabilityCarrying Amountof LiabilityFair Valueof LiabilityCredit Facilities$20,000 $20,000 $20,000 $20,000 Unsecured Term Loan155,000 154,932 155,000 151,449 Term Financings922,688 918,700 761,283 739,804 Senior Notes3,850,000 3,685,049 3,700,000 3,524,563

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

Name:	us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration