Fair Value Measurements (Fair Value Hierarchy) (Details) - USD ($) $ in Millions | May 04, 2018 | Feb. 02, 2018 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Short term investments | $ 5,502 | |
Marketable equity securities | 27 | |
Short-term investments | 5,529 | |
Deferred compensation plan assets | 66 | $ 60 |
Deferred compensation plan liabilities | 66 | 60 |
Short Term Investments | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Short-term investments | | 5,682 |
U.S. Government and agency obligations | Short Term Investments | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Short-term investments | | 957 |
U.S. and foreign corporate debt securities | Short Term Investments | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Short-term investments | | 4,473 |
Foreign governments and multi-national agency obligations | Short Term Investments | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Short-term investments | | 98 |
Mortgage-backed securities | Short Term Investments | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Short-term investments | | 121 |
Marketable available-for-sale equity securities | Short Term Investments | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Short-term investments | | 33 |
Total cash equivalents | Cash and Cash Equivalents | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Cash equivalents | 6,688 | 5,548 |
Money-market funds | Cash and Cash Equivalents | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Cash equivalents | 6,621 | 5,460 |
U.S. and foreign corporate debt securities | Cash and Cash Equivalents | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Cash equivalents | 67 | 88 |
Fair Value, Measurements, Recurring | Short Term Investments | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Marketable equity securities | 27 | |
Short-term investments | 5,529 | |
Short-term investments | | 5,682 |
Fair Value, Measurements, Recurring | Short Term Investments | Level 1 | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Marketable equity securities | 27 | |
Short-term investments | 706 | |
Short-term investments | | 717 |
Fair Value, Measurements, Recurring | Short Term Investments | Level 2 | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Marketable equity securities | 0 | |
Short-term investments | 4,823 | |
Short-term investments | | 4,965 |
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 | 947 | |
Short-term investments | | 957 |
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 | 679 | |
Short-term investments | | 684 |
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 | 268 | |
Short-term investments | | 273 |
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 | 4,355 | |
Short-term investments | | 4,473 |
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 | 0 | |
Short-term investments | | 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 | 4,355 | |
Short-term investments | | 4,473 |
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 | 96 | |
Short-term investments | | 98 |
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 | 0 | |
Short-term investments | | 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 | 96 | |
Short-term investments | | 98 |
Fair Value, Measurements, Recurring | Mortgage-backed securities | Short Term Investments | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Short term investments | 104 | |
Short-term investments | | 121 |
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 | 0 | |
Short-term investments | | 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 | 104 | |
Short-term investments | | 121 |
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 | | 33 |
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 | | 33 |
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 | | 0 |
Fair Value, Measurements, Recurring | Total cash equivalents | Cash and Cash Equivalents | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Cash equivalents | 6,688 | 5,548 |
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 | 6,621 | 5,460 |
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 | 67 | 88 |
Fair Value, Measurements, Recurring | Money-market funds | Cash and Cash Equivalents | | |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | | |
Cash equivalents | 6,621 | 5,460 |
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 | 6,621 | 5,460 |
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 |
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 | 67 | 88 |
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 | 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 | $ 67 | $ 88 |