Long-term debt consists of the following unsecured senior debt as of October 28, 2017, January 28, 2017, and October 29, 2016:



Maturity (Dollars in Millions)	Effective Rate		Coupon Rate		Outstanding
2021	4.81	%	4.00	%	$	650
2023	3.25	%	3.25	%	350
2023	4.78	%	4.75	%	300
2025	4.25	%	4.25	%	650
2029	7.36	%	7.25	%	99
2033	6.05	%	6.00	%	166
2037	6.89	%	6.88	%	150
2045	5.57	%	5.55	%	450
	4.88	%			$	2,815

Long-term debt is net of unamortized debt discounts and deferred financing costs of $19 million at October 28, 2017, $20 million at January 28, 2017, and $21 million at October 29, 2016.

Our long-term debt is classified as Level 1, financial instruments with unadjusted, quoted prices listed on active market exchanges. The estimated fair value of our long-term debt was $2.9 billion at October 28, 2017, $2.7 billion at January 28, 2017 and $3.0 billion at October 29, 2016.