Restructuring and Other Charges, net (By Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (1,079)	$ (7,074)	$ (21,657)	$ (17,457)
Restructuring Charges and Other Expenses	16,118	5,342	60,668	27,792
Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(223)	(377)	(4,814)	(3,703)
Restructuring Charges and Other Expenses	223	377	4,814	3,703
Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring charges	165	(3,215)	(5,099)	(6,109)
Restructuring Charges and Other Expenses	(165)	3,215	5,099	6,109
Automotive
Restructuring Cost and Reserve [Line Items]
Restructuring charges	607	(1,233)	(6,931)	(2,233)
Restructuring Charges and Other Expenses	14,171	1,233	34,222	2,233
Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(544)	(208)	(1,458)	(2,122)
Restructuring Charges and Other Expenses	783	208	4,764	2,122
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1,084)	(2,041)	(3,355)	(3,290)
Restructuring Charges and Other Expenses	1,106	309	11,769	13,625
Personnel
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(677)	(6,324)	(19,104)	(13,687)
Personnel | Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(222)	(377)	(4,672)	(3,678)
Personnel | Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring charges	165	(3,412)	(5,086)	(3,939)
Personnel | Automotive
Restructuring Cost and Reserve [Line Items]
Restructuring charges	639	(1,233)	(5,224)	(2,233)
Personnel | Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(529)	(154)	(1,443)	(1,498)
Personnel | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(730)	(1,148)	(2,679)	(2,339)
Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(402)	(750)	(2,553)	(3,770)
Facilities | Healthcare
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1)	0	(142)	(25)
Facilities | Enterprise
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	197	(13)	(2,170)
Facilities | Automotive
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(32)	0	(1,707)	0
Facilities | Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(15)	(54)	(15)	(624)
Facilities | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(354)	(893)	(676)	(951)
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Charges	15,039	(1,732)	39,011	10,335
Other Restructuring [Member] | Healthcare
Restructuring Cost and Reserve [Line Items]
Other Charges	0	0	0	0
Other Restructuring [Member] | Enterprise
Restructuring Cost and Reserve [Line Items]
Other Charges	0	0	0	0
Other Restructuring [Member] | Automotive
Restructuring Cost and Reserve [Line Items]
Other Charges	14,778	0	27,291	0
Other Restructuring [Member] | Other
Restructuring Cost and Reserve [Line Items]
Other Charges	239	0	3,306	0
Other Restructuring [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Other Charges	$ 22	(1,732)	$ 8,414	10,335
Chief Executive Officer [Member] | Other Restructuring [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Other Charges		$ 1,100		$ 5,600