Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
Statement of Comprehensive Income [Abstract]
Net earnings		$ 36.8	$ 11.2	$ 19.5	$ 16.8
Other comprehensive income (loss)
Translation adjustment		5.4	4.3	10.9	(9.6)
Reclassification of derivative financial instruments recognized in net earnings	[1]	(1.6)	1.3	(2.1)	2.3
Unrealized gain (loss) on derivative financial instruments	[2]	6.1	0.8	15.0	(2.4)
Other (net of tax effect)		0.1	0.2	0.1	0.1
Other comprehensive income		10.0	6.6	23.9	(9.6)
Comprehensive income		46.8	17.8	43.4	7.2
Comprehensive (income) loss attributable to noncontrolling interest		(3.7)	1.6	(3.1)	6.8
Comprehensive income attributable to Greenbrier		$ 43.1	$ 19.4	$ 40.3	$ 14.0

[1] 1 Net of tax effect of $0.7 million and $(0.2 million) for the three months ended February 28, 2023 and February 28, 2022 and $1.0 million and $(0.7 million) for the six months ended February 28, 2023 and February 28, 2022.

[2] 2 Net of tax effect of $(3.8 million) and $(0.8 million) for the three months ended February 28, 2023 and February 28, 2022 and $(6.8 million) and $0.2 million for the six months ended February 28, 2023 and February 28, 2022.