Derivative Instruments - Additional Information (Detail) - Interest rate swaps - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Designated as Hedging Instrument
Derivative [Line Items]
Estimated amount to be reclassified from AOCI to interest expense	$ 55,087
Not designated as hedges
Derivative [Line Items]
Total notional amount		$ 508,250
Accrued interest		$ 14,552

Derivative asset notional amount during period.

No definition available.

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Namespace Prefix:	tgh_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Increase for accrued, but unpaid interest on the debt instrument for the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 6
-URI https://asc.fasb.org/extlink&oid=121549185&loc=d3e80845-113994

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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