Debt (Tables)

6 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Long-term debt at March 31, 2023 and September 30, 2022 consisted of the following:

	March 31, 2023		September 30, 2022
	(In thousands)
Unsecured 0.625% Senior Notes, due March 2023	$	—	$	1,100,000
Unsecured 3.00% Senior Notes, due June 2027	500,000		500,000
Unsecured 2.625% Senior Notes, due September 2029	500,000		500,000
Unsecured 1.50% Senior Notes, due January 2031	600,000		600,000
Unsecured 5.45% Senior Notes, due October 2032	300,000		—
Unsecured 5.95% Senior Notes, due October 2034	200,000		200,000
Unsecured 5.50% Senior Notes, due June 2041	400,000		400,000
Unsecured 4.15% Senior Notes, due January 2043	500,000		500,000
Unsecured 4.125% Senior Notes, due October 2044	750,000		750,000
Unsecured 4.30% Senior Notes, due October 2048	600,000		600,000
Unsecured 4.125% Senior Notes, due March 2049	450,000		450,000
Unsecured 3.375% Senior Notes, due September 2049	500,000		500,000
Unsecured 2.85% Senior Notes, due February 2052	600,000		600,000
Unsecured 5.75% Senior Notes, due October 2052	500,000		—
Floating-rate Senior Notes, due March 2023	—		1,100,000
Medium-term note Series A, 1995-1, 6.67%, due December 2025	10,000		10,000
Unsecured 6.75% Debentures, due July 2028	150,000		150,000
Finance lease obligations	51,133		51,850
Total long-term debt	6,611,133		8,011,850
Less:
Original issue discount on unsecured senior notes and debentures	6,271		3,704
Debt issuance cost	50,253		46,042
Current maturities of long-term debt	1,512		2,201,457
	$	6,553,097	$	5,760,647