Repurchase of Common Stock (Notes)	9 Months Ended
Oct. 31, 2015
Equity [Abstract]
Schedule of Repurchases of Common Stock [Table Text Block]	10. Repurchase of Common Stock We have a $5.0 billion share repurchase program that was authorized by our Board of Directors in June 2011. At the beginning of fiscal 2016, there was $4.0 billion available for share repurchases. There is no expiration date governing the period over which we can repurchase shares under the June 2011 share repurchase program. On March 3, 2015, we announced that we planned to resume share repurchases under the 2011 program, with the intent to purchase $1.0 billion in the 3 years following the announcement. We anticipate continuing to purchase shares in the near term, which could result in our reaching the $1.0 billion threshold prior to the three years previously disclosed. For the three and nine months ended October 31, 2015, we repurchased 1.8 million and 11.3 million shares of our common stock at a cost of $64 million and $388 million, respectively. No shares were repurchased during the three and nine months ended November 1, 2014. At October 31, 2015, approximately $3.6 billion remained available for additional purchases under the June 2011 share repurchase program. Between the end of the third quarter of fiscal 2016 and December 3, 2015, we repurchased an incremental 3.0 million shares of our common stock at a cost of $95 million. Repurchased shares have been retired and constitute authorized, but unissued shares.

10. Repurchase of Common Stock

We have a $5.0 billion share repurchase program that was authorized by our Board of Directors in June 2011. At the beginning of fiscal 2016, there was $4.0 billion available for share repurchases. There is no expiration date governing the period over which we can repurchase shares under the June 2011 share repurchase program. On March 3, 2015, we announced that we planned to resume share repurchases under the 2011 program, with the intent to purchase $1.0 billion in the 3 years following the announcement. We anticipate continuing to purchase shares in the near term, which could result in our reaching the $1.0 billion threshold prior to the three years previously disclosed.

For the three and nine months ended October 31, 2015, we repurchased 1.8 million and 11.3 million shares of our common stock at a cost of $64 million and $388 million, respectively. No shares were repurchased during the three and nine months ended November 1, 2014. At October 31, 2015, approximately $3.6 billion remained available for additional purchases under the June 2011 share repurchase program. Between the end of the third quarter of fiscal 2016 and December 3, 2015, we repurchased an incremental 3.0 million shares of our common stock at a cost of $95 million. Repurchased shares have been retired and constitute authorized, but unissued shares.