							Outstanding
Maturity (Dollars in Millions)	Effective Rate			Coupon Rate			Feb 1, 2020			Feb 2, 2019
2023		3.25	%		3.25	%	$	350		$	350
2023		4.78	%		4.75	%		184			184
2025		4.25	%		4.25	%		650			650
2029		7.36	%		7.25	%		42			42
2033		6.05	%		6.00	%		113			113
2037		6.89	%		6.88	%		101			101
2045		5.57	%		5.55	%		427			433
Outstanding long-term debt								1,867			1,873
Unamortized debt discounts and deferred financing costs								(11	)		(12	)
Long-term debt							$	1,856		$	1,861
Effective interest rate								4.74	%		4.74	%

The estimated fair value of our long-term debt was $2.0 billion at February 1, 2020 and $1.8 billion at February 2, 2019, and would be classified as Level 1, financial instruments with unadjusted, quoted prices listed on active market exchanges.

In 2019, we amended and extended our existing credit facility with various lenders which provides for a $1.0 billion senior unsecured five-year revolving credit facility that will mature in July 2024. No amounts were outstanding on the credit facility at February 2, 2020 or February 1, 2019. We also reduced our outstanding debt by $6 million through repurchases of our notes on the open market.

Our various debt agreements contain covenants including limitations on additional indebtedness and certain financial tests. As of February 1, 2020, we were in compliance with all covenants of the various debt agreements.

We also had outstanding trade letters of credit totaling approximately $50 million at February 1, 2020 issued under uncommitted lines with two banks.