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


	June 30, 2024			December 31, 2023
Senior secured asset-based revolving credit facility (effective interest rate of 6.7%)	$	850		$	1,880
Senior secured revolving credit facility		—			—
Senior secured term loan facilities (effective interest rate of 6.8%)		1,275			1,313
Other senior secured debt (effective interest rate of 4.2%)		1,010			967
Senior secured debt		3,135			4,160
Senior unsecured notes (effective interest rate of 5.1%)		38,116			35,766
Debt issuance costs and discounts		(371	)		(333	)
Total debt (average life of 10.8 years, rates averaging 5.1%)		40,880			39,593
Less amounts due within one year		4,574			2,424
	$	36,306		$	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, (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.