Credit Facilities, Short-term Borrowings and Long-term Debt (Tables)

12 Months Ended

Sep. 30, 2018

Debt Disclosure

Short-term Borrowings and Availability Under Various Short-term Credit Facilities

	Total availability		Outstanding letters of credit and guarantees		Outstanding borrowings		Remaining availability
Revolving credit facility	$	1,000,000	$	(11,484)	$	(266,541)	$	721,975
Foreign lines of credit and overdraft facilities		7,440		-		-		7,440
Foreign performance guarantee facilities		1,783		(1,536)		-		247
Other short-term borrowings		3,635		-		(3,635)		-
	$	1,012,858	$	(13,020)	$	(270,176)	$	729,662

Schedule of Long-term Debt Instruments [Table Text Block]

	September 30,		September 30,
	2018		2017
Long-term portion of revolving credit facility - Floating rate (LIBOR plus 0.85% - 1.65%), due April 2020; unsecured	$	116,541	$	-
Series D notes – 6.39%, due October 2018; unsecured		100,000		100,000
Series F notes – 8.24%, due April 2019; unsecured		43,000		43,000
Series G notes – 3.42%, due November 2020; unsecured		50,000		50,000
Series H notes – 4.03%, due November 2023; unsecured		25,000		25,000
Series I notes – 4.18%, due November 2025; unsecured		25,000		25,000
Series J notes – Floating rate (LIBOR plus 1.25%), due November 2020; unsecured		50,000		50,000
Series K notes – 4.03%, due November 2023; unsecured		50,000		50,000
Series L notes – 4.18%, due November 2025; unsecured		50,000		50,000
Series M notes – 1.12% due September 2026; unsecured		46,437		47,270
Series N notes – 1.31% due September 2028; unsecured		89,393		90,995
Series O notes – 1.57% due September 2031; unsecured		49,921		50,815
Series P notes – 4.27% due May 2025; unsecured		85,000		-
Series Q notes – 4.35% due May 2027; unsecured		85,000		-
Series R notes – 4.41% due May 2029; unsecured		75,000		-
Series S notes – 4.46% due May 2030; unsecured		75,000		-
Series T notes – 4.61% due May 2033; unsecured		80,000		-
Unamortized debt issuance costs		(2,895)		(1,794)
Total long-term debt		1,092,397		580,286
Less: Current portion of long-term debt		-		-
Long-term debt, less current portion	$	1,092,397	$	580,286

Schedule of Future Principal Payments of Long-term Debt [Table Text Block]

Year Ending September 30:
2019	$	143,000
2020		-
2021		100,000
2022		-
2023		-
Thereafter		735,751
	$	978,751