Debt (Table)

12 Months Ended

Jan. 29, 2017

Debt Disclosure [Abstract]

Convertible Debt

The following table presents the carrying value of the liability of the Convertible Notes:

	January 29, 2017			January 31, 2016
	(In millions)
1.00% Convertible Senior Notes	$	827		$	1,500
Unamortized debt discount (1)	(31		)	(87		)
Net carrying amount	$	796		$	1,413

(1) As of January 29, 2017, the remaining period over which the unamortized debt discount will be amortized is 1.8 years.

The following table presents interest expense for the contractual interest and the accretion of debt discount and issuance costs related to the Convertible Notes:

	Year Ended
	January 29, 2017		January 31, 2016		January 25, 2015
	(In millions)
Contractual coupon interest expense	$	9	$	15	$	15
Amortization of debt discount	24		29		28
Total interest expense related to Convertible Notes	$	33	$	44	$	43

Long-term Debt

The carrying value of our long-term debt and the associated interest rates were as follows:

	Expected Remaining Term (years)	Effective Interest Rate	January 29, 2017
			(In millions)
2.20% Notes Due 2021	4.6	2.38%	$	1,000
3.20% Notes Due 2026	9.6	3.31%	1,000
Unamortized debt discount and issuance costs			(17		)
Net carrying amount			$	1,983