Taxes Schedule of Income from Continuing Operations (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Jan. 31, 2016 |
Jan. 31, 2015 |
Jan. 31, 2014 |
|
Taxes [Line Items] | |||
Income (Loss) from Continuing Operations before Income Taxes, Domestic | $ 16,685 | $ 18,610 | $ 19,412 |
Income (Loss) from Continuing Operations before Income Taxes, Foreign | 4,953 | 6,189 | 5,244 |
Income from continuing operations before income taxes | $ 21,638 | $ 24,799 | $ 24,656 |