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New Accounting Pronouncements (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Jul. 28, 2017 | Apr. 28, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cumulative effect of change in accounting principle |  | $ 296,000,000
Accounting Standards Update 2016-09 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Increase (decrease) to net income | $ 24,000,000 |
Increase (decrease) to diluted earnings per share (in dollars per share) | $ 0.02 |
Accounting Standards Update 2016-09 | Retained Earnings |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cumulative effect of change in accounting principle |  | 0
Accounting Standards Update 2016-16 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Increase (decrease) to net income | $ (25,000,000) |
Increase (decrease) to diluted earnings per share (in dollars per share) | $ (0.02) |
Accounting Standards Update 2016-16 | Retained Earnings |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cumulative effect of change in accounting principle |  | $ 296,000,000

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