A summary of long-term debt at March 31, 2020 and December 31, 2019, including related interest rates at March 31, 2020, follows (dollars in millions):


	March 31, 2020			December 31, 2019
Senior secured asset-based revolving credit facility (effective interest rate of 2.1%)	$	3,750		$	2,480
Senior secured revolving credit facility (effective interest rate of 2.2%)		170			—
Senior secured 364-day term loan facility		—			—
Senior secured term loan facilities (effective interest rate of 3.0%)		3,711			3,725
Senior secured notes (effective interest rate of 5.1%)		13,850			13,850
Other senior secured debt (effective interest rate of 5.2%)		686			654

Senior secured debt		22,167			20,709
Senior unsecured notes (effective interest rate of 5.5%)		12,952			13,252
Debt issuance costs and discounts		(258	)		(239	)

Total debt (average life of 8.8 years, rates averaging 4.7%)		34,861			33,722
Less amounts due within one year		162			145

	$	34,699		$	33,577

During February 2020, we issued $2.700 billion aggregate principal amount of 3.50% senior notes due 2030. During March 2020, we used the net proceeds for the redemption of all $1.000 billion outstanding aggregate principal amount of HCA Healthcare, Inc.’s 6.25% senior notes due 2021 and, together with available funds, for the redemption of all $2.000 billion outstanding aggregate principal amount of HCA Inc.’s 7.50% senior notes due 2022. The pretax loss on retirement of debt was $295 million.

In response to the risks the

COVID-19

pandemic presents to our business, during

March 2020, we entered into a credit agreement that provides for a

364-day

secured term loan facility for an aggregate principal amount of up to $2.000 billion. The facility will mature in March 2021. If drawn, amounts outstanding under the credit agreement will bear interest at either (i) the LIBOR rate plus 2.50% or (ii) an alternate base rate as defined in the credit agreement. As of March 31, 2020

there were no amounts outstanding nor draw notices pending under the facility.