Fair Value Measurements (Fair Value Hierarchy) (Details) - USD ($) $ in Millions | Nov. 03, 2017 | Feb. 03, 2017 | Dec. 31, 2016 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Deferred compensation plan assets | $ 57 | $ 36 | $ 35 |
Deferred compensation plan liabilities | 57 | 36 | 35 |
Level 2 | Notes payable | Dell | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Fair value of debt | 255 | 1,492 | 1,489 |
Level 2 | Senior Notes | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Fair value of debt | 4,008 | | |
Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 5,600 | 5,173 | 5,195 |
U.S. Government and agency obligations | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 996 | 730 | 731 |
U.S. and foreign corporate debt securities | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 4,344 | 3,871 | 3,869 |
Foreign governments and multi-national agency obligations | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 95 | 32 | 32 |
Municipal obligations | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 350 | 365 |
Asset-backed securities | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 4 | 4 |
Mortgage-backed securities | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 133 | 186 | 194 |
Marketable available-for-sale equity securities | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 32 | | |
Marketable available-for-sale equity securities | Other Assets | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 22 | 22 |
Total cash equivalents | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5,597 | 2,500 | 2,278 |
Money-market funds | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5,503 | 2,471 | 2,235 |
U.S. Government and agency obligations | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5 | | |
U.S. and foreign corporate debt securities | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 89 | | |
Time deposits | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | | 26 | 26 |
Municipal obligations | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | | 3 | 17 |
Fair Value, Measurements, Recurring | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 5,600 | 5,173 | 5,195 |
Fair Value, Measurements, Recurring | Short Term Investments | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 760 | 445 | 441 |
Fair Value, Measurements, Recurring | Short Term Investments | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 4,840 | 4,728 | 4,754 |
Fair Value, Measurements, Recurring | Other Current Assets | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Derivative due to stock purchase with Dell | | 9 | 8 |
Forward contracts | 5 | | |
Fair Value, Measurements, Recurring | Other Current Assets | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Derivative due to stock purchase with Dell | | 0 | 0 |
Forward contracts | 0 | | |
Fair Value, Measurements, Recurring | Other Current Assets | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Derivative due to stock purchase with Dell | | 9 | 8 |
Forward contracts | 5 | | |
Fair Value, Measurements, Recurring | U.S. Government and agency obligations | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 996 | 730 | 731 |
Fair Value, Measurements, Recurring | U.S. Government and agency obligations | Short Term Investments | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 728 | 445 | 441 |
Fair Value, Measurements, Recurring | U.S. Government and agency obligations | Short Term Investments | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 268 | 285 | 290 |
Fair Value, Measurements, Recurring | U.S. and foreign corporate debt securities | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 4,344 | 3,871 | 3,869 |
Fair Value, Measurements, Recurring | U.S. and foreign corporate debt securities | Short Term Investments | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 0 | 0 | 0 |
Fair Value, Measurements, Recurring | U.S. and foreign corporate debt securities | Short Term Investments | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 4,344 | 3,871 | 3,869 |
Fair Value, Measurements, Recurring | Foreign governments and multi-national agency obligations | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 95 | 32 | 32 |
Fair Value, Measurements, Recurring | Foreign governments and multi-national agency obligations | Short Term Investments | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 0 | 0 | 0 |
Fair Value, Measurements, Recurring | Foreign governments and multi-national agency obligations | Short Term Investments | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 95 | 32 | 32 |
Fair Value, Measurements, Recurring | Municipal obligations | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 350 | 365 |
Fair Value, Measurements, Recurring | Municipal obligations | Short Term Investments | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 0 | 0 |
Fair Value, Measurements, Recurring | Municipal obligations | Short Term Investments | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 350 | 365 |
Fair Value, Measurements, Recurring | Asset-backed securities | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 4 | 4 |
Fair Value, Measurements, Recurring | Asset-backed securities | Short Term Investments | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 0 | 0 |
Fair Value, Measurements, Recurring | Asset-backed securities | Short Term Investments | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 4 | 4 |
Fair Value, Measurements, Recurring | Mortgage-backed securities | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 133 | 186 | 194 |
Fair Value, Measurements, Recurring | Mortgage-backed securities | Short Term Investments | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 0 | 0 | 0 |
Fair Value, Measurements, Recurring | Mortgage-backed securities | Short Term Investments | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 133 | 186 | 194 |
Fair Value, Measurements, Recurring | Marketable available-for-sale equity securities | Short Term Investments | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 32 | | |
Fair Value, Measurements, Recurring | Marketable available-for-sale equity securities | Short Term Investments | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 32 | | |
Fair Value, Measurements, Recurring | Marketable available-for-sale equity securities | Short Term Investments | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | 0 | | |
Fair Value, Measurements, Recurring | Marketable available-for-sale equity securities | Other Assets | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 22 | 22 |
Fair Value, Measurements, Recurring | Marketable available-for-sale equity securities | Other Assets | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 22 | 22 |
Fair Value, Measurements, Recurring | Marketable available-for-sale equity securities | Other Assets | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Short-term investments and other assets | | 0 | 0 |
Fair Value, Measurements, Recurring | Total cash equivalents | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5,597 | 2,500 | 2,278 |
Fair Value, Measurements, Recurring | Total cash equivalents | Cash and Cash Equivalents | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5,508 | 2,471 | 2,235 |
Fair Value, Measurements, Recurring | Total cash equivalents | Cash and Cash Equivalents | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 89 | 29 | 43 |
Fair Value, Measurements, Recurring | Money-market funds | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5,503 | 2,471 | 2,235 |
Fair Value, Measurements, Recurring | Money-market funds | Cash and Cash Equivalents | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5,503 | 2,471 | 2,235 |
Fair Value, Measurements, Recurring | Money-market funds | Cash and Cash Equivalents | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 0 | 0 | 0 |
Fair Value, Measurements, Recurring | U.S. Government and agency obligations | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5 | | |
Fair Value, Measurements, Recurring | U.S. Government and agency obligations | Cash and Cash Equivalents | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 5 | | |
Fair Value, Measurements, Recurring | U.S. Government and agency obligations | Cash and Cash Equivalents | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 0 | | |
Fair Value, Measurements, Recurring | U.S. and foreign corporate debt securities | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 89 | | |
Fair Value, Measurements, Recurring | U.S. and foreign corporate debt securities | Cash and Cash Equivalents | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | 0 | | |
Fair Value, Measurements, Recurring | U.S. and foreign corporate debt securities | Cash and Cash Equivalents | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | $ 89 | | |
Fair Value, Measurements, Recurring | Time deposits | Cash and Cash Equivalents | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | | 26 | 26 |
Fair Value, Measurements, Recurring | Time deposits | Cash and Cash Equivalents | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | | 0 | 0 |
Fair Value, Measurements, Recurring | Time deposits | Cash and Cash Equivalents | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | | 26 | 26 |
Fair Value, Measurements, Recurring | Municipal obligations | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | | 3 | 17 |
Fair Value, Measurements, Recurring | Municipal obligations | Cash and Cash Equivalents | Level 1 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | | 0 | 0 |
Fair Value, Measurements, Recurring | Municipal obligations | Cash and Cash Equivalents | Level 2 | | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | | |
Cash equivalents | | $ 3 | $ 17 |