Schedule I Condensed Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Administrative expenses	$ 87,609	$ 65,618	$ 53,435
Transaction and other costs	9,272	66,916	22,185
Operating Income (Loss)	546,438	176,279	281,478
Other Nonoperating Income (Expense)	2,637	1,076	(211)
Income tax (benefit) expense	(93,274)	(48)	4,048
Net Income (Loss) Attributable to Parent	353,526	(5,785)	$ 127,669
Triton International Limited Holdings [Domain]
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0
Administrative expenses	4,011	276
Transaction and other costs	0	10,706
Operating Expenses	(4,011)	(10,982)
Income (Loss) from Subsidiaries, before Tax	348,609	(2,535)
Other Nonoperating Income (Expense)	348,609	(2,535)
Amounts reclassified from accumulated other comprehensive (loss) before income tax	344,598	(13,517)
Income tax (benefit) expense	0	0
Net Income (Loss) Attributable to Parent	$ 344,598	$ (13,517)