Maximus, Inc. Annual report pursuant to Section 13 and 15(d)

Business segments - Revenue from External Customers by Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Revenues and total long-lived assets
Revenue	$ 623,091	$ 617,094	$ 606,453	$ 556,722	$ 578,683	$ 572,301	$ 481,794	$ 467,043	$ 2,403,360	$ 2,099,821	$ 1,700,912
United States
Revenues and total long-lived assets
Revenue									1,721,261	1,559,769	1,306,026
United Kingdom
Revenues and total long-lived assets
Revenue									384,649	267,702	128,363
Australia
Revenues and total long-lived assets
Revenue									200,539	178,167	170,727
Rest of World
Revenues and total long-lived assets
Revenue									$ 96,911	$ 94,183	$ 95,796