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

12 Months Ended

Sep. 30, 2017

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	$	(10,621)	$	(32,600)	$	956,779
Foreign lines of credit and overdraft facilities		7,530		-		-		7,530
Foreign performance guarantee facilities		10,058		(351)		-		9,707
	$	1,017,588	$	(10,972)	$	(32,600)	$	974,016

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

	September 30,		September 30,
	2017		2016
Revolving credit facility - Floating rate (LIBOR plus 0.85% - 1.65%), due April 2020, unsecured	$	32,600	$	156,700
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		47,270		44,886
Series N notes – 1.31% due September 2028; unsecured		90,995		86,406
Series O notes – 1.57% due September 2031; unsecured		50,815		48,252
Total debt		614,680		729,244
Less: Current portion of long-term debt		(32,600)		(150,000)
Unamortized debt issuance costs		(1,794)		(2,091)
Long-term debt, less current portion	$	580,286	$	577,153

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

Year Ending September 30:
2018	$	-
2019		143,000
2020		-
2021		100,000
2022		-
Thereafter		339,080
	$	582,080