Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings (loss)		$ 7.6	$ 20.0	$ 24.4	$ (0.5)
Other comprehensive income (loss)
Translation adjustment		2.2	4.8	(7.4)	9.3
Reclassification of derivative financial instruments recognized in net earnings (loss)	[1]	1.5	1.4	3.8	3.9
Unrealized gain (loss) on derivative financial instruments	[2]	13.1	0.7	10.7	(0.2)
Other (net of tax effect)			(0.2)	0.1	(0.2)
Other comprehensive income		16.8	6.7	7.2	12.8
Comprehensive income		24.4	26.7	31.6	12.3
Comprehensive (earnings) loss attributable to noncontrolling interest		(4.6)	(0.3)	2.2	1.2
Comprehensive income attributable to Greenbrier		$ 19.8	$ 26.4	$ 33.8	$ 13.5

[1] 1 Net of tax effect of ($0.7 million) and ($0.4 million) for the three months ended May 31, 2022 and 2021 and ($1.4 million) and ($1.2 million) for the nine months ended May 31, 2022 and 2021.

[2] 2 Net of tax effect of ($4.5 million) and ($0.4 million) for the three months ended May 31, 2022 and 2021 and ($4.3 million) and $0.3 million for the nine months ended May 31, 2022 and 2021.