Debt (Tables)

6 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Long-term debt at March 31, 2022 and September 30, 2021 consisted of the following:

	March 31, 2022		September 30, 2021
	(In thousands)
Unsecured 0.625% Senior Notes, due March 2023	$	1,100,000	$	1,100,000
Unsecured 3.00% Senior Notes, due 2027	500,000		500,000
Unsecured 2.625% Senior Notes, due 2029	500,000		300,000
Unsecured 1.50% Senior Notes, due 2031	600,000		600,000
Unsecured 5.95% Senior Notes, due 2034	200,000		200,000
Unsecured 5.50% Senior Notes, due 2041	400,000		400,000
Unsecured 4.15% Senior Notes, due 2043	500,000		500,000
Unsecured 4.125% Senior Notes, due 2044	750,000		750,000
Unsecured 4.30% Senior Notes, due 2048	600,000		600,000
Unsecured 4.125% Senior Notes, due 2049	450,000		450,000
Unsecured 3.375% Senior Notes, due 2049	500,000		500,000
Unsecured 2.85% Senior Notes, due 2052	600,000		—
Floating-rate term loan, due April 2022	—		200,000
Floating-rate Senior Notes, due March 2023	1,100,000		1,100,000
Medium-term note Series A, 1995-1, 6.67%, due 2025	10,000		10,000
Unsecured 6.75% Debentures, due 2028	150,000		150,000
Finance lease obligations	52,537		18,739
Total long-term debt	8,012,537		7,378,739
Less:
Original issue discount on unsecured senior notes and debentures	3,814		2,811
Debt issuance cost	49,724		45,271
Current maturities	2,201,404		2,400,452
	$	5,757,595	$	4,930,205