Goodwill and Intangible Assets (Details) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)
Goodwill [Line Items]
Impairment of long-lived assets	$ 1.1
Goodwill [Roll Forward]
Balance at September 30, 2019		$ 298.5
Impairment charge		41.3
Balance at March 31, 2020	257.2	257.2
Cumulative goodwill impairment charges	41.3	41.3
U.S. Pawn
Goodwill [Roll Forward]
Balance at September 30, 2019		251.8
Impairment charge		10.0
Balance at March 31, 2020	241.8	241.8
Cumulative goodwill impairment charges	10.0	10.0
Latin America Pawn
Goodwill [Roll Forward]
Balance at September 30, 2019		46.7
Impairment charge		31.3
Balance at March 31, 2020	15.4	15.4
Cumulative goodwill impairment charges	31.3	$ 31.3
Mexico Reporting Unit | Trade Names
Goodwill [Line Items]
Impairment of intangible assets	2.9
GPMX Reporting Unit | Trade Names
Goodwill [Line Items]
Impairment of intangible assets	$ 1.7