CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) shares in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2018 USD ($) $ / shares shares	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares
Income Statement [Abstract]
Revenue	$ 1,977,918	$ 1,524,997	$ 1,477,035
Cost of goods and services	1,448,358	1,116,881	1,076,342
Gross profit	529,560	408,116	400,693
Selling, general and administrative expenses	433,110	339,089	318,353
Income from continuing operations	96,450	69,027	82,340
Other income (expense)
Interest expense	(65,568)	(51,513)	(49,943)
Interest income	1,697	64	66
Other, net	1,231	(880)	(250)
Total other income (expense)	(62,640)	(52,329)	(50,127)
Income before taxes from continuing operations	33,810	16,698	32,213
Provision (benefit) for income taxes	555	(1,085)	12,432
Income (loss) from continuing operations	33,255	17,783	19,781
Discontinued operations:
Income from operations of discontinued businesses	119,981	22,276	20,952
Provision for income taxes	27,558	25,147	10,723
Income (loss) from discontinued operations	92,423	(2,871)	10,229
Net income	$ 125,678	$ 14,912	$ 30,010
Income from continuing operations (in usd per share) | $ / shares	$ 0.81	$ 0.43	$ 0.48
Income from discontinued operations (in usd per share) | $ / shares	2.25	(0.07)	0.25
Basic earnings per common share (in Dollars per share) | $ / shares	$ 3.06	$ 0.36	$ 0.73
Weighted-average shares outstanding (in Shares) | shares	41,005	41,005	41,074
Income from continuing operations (in usd per share) | $ / shares	$ 0.78	$ 0.41	$ 0.45
Income from discontinued operations (in usd per share) | $ / shares	2.18	(0.07)	0.23
Diluted earnings per common share (in usd per share) | $ / shares	$ 2.96	$ 0.35	$ 0.68
Weighted-average shares outstanding (in Shares) | shares	42,422	43,011	44,109
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments	$ 9,403	$ 10,667	$ 17,284
Pension and other post retirement plans	16,381	9,203	(5,651)
Gain (loss) on cash flow hedge	585	890	(1,686)
Total other comprehensive income, net of taxes	26,369	20,760	9,947
Comprehensive income	$ 152,047	$ 35,672	$ 39,957