A summary of long-term debt at September 30, 2024 and December 31, 2023, including related interest rates at September 30, 2024, follows (dollars in millions):


	September 30, 2024			December 31, 2023
Senior secured asset-based revolving credit facility	$	—		$	1,880
Senior secured revolving credit facility		—			—
Senior secured term loan facilities (effective interest rate of 6.3%)		1,256			1,313
Other senior secured debt (effective interest rate of 4.3%)		971			967
Senior secured debt		2,227			4,160
Senior unsecured notes (effective interest rate of 5.1%)		41,116			35,766
Debt issuance costs and discounts		(378	)		(333	)
Total debt (average life of 11.1 years, rates averaging 5.1%)		42,965			39,593
Less amounts due within one year		4,682			2,424
	$	38,283		$	37,169

During February 2024, we issued $4.500 billion aggregate principal amount of senior notes comprised of (i) $1.000 billion aggregate principal amount of 5.450% senior notes due 2031 (the “Existing 2031 Notes”), (ii) $1.300 billion aggregate principal amount of 5.600% senior notes due 2034, (iii) $1.500 billion aggregate principal amount of 6.000% senior notes due 2054 and (iv) $700 million aggregate principal amount of 6.100% senior notes due 2064. We used the net proceeds to repay borrowings under our asset-based revolving credit facility and for general corporate purposes. During March 2024, we repaid all of the $2.000 billion aggregate principal amount of 5.000% senior notes due 2024 at maturity.

During August 2024, we issued $3.000 billion aggregate principal amount of senior notes comprised of (i) $750 million aggregate principal amount of 5.450% senior notes due 2031 (the “New 2031 Notes”), (ii) $1.250 billion aggregate principal amount of 5.450% senior notes due 2034 and (iii) $1.000 billion aggregate principal amount of 5.950% senior notes due 2054. The New 2031 Notes represent a further issuance of our Existing 2031 Notes, issued during February 2024, and together with the New 2031 Notes, the aggregate principal amount of these notes is $1.750 billion. We used the net proceeds to repay borrowings under our asset-based revolving credit facility and for general corporate purposes.