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Litigation and Other Legal Matters Litigation and Other Legal Matters (Details) | Dec. 29, 2015 action | Dec. 21, 2015 action | Nov. 10, 2015 action | Oct. 21, 2015 stockholder
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Merger-related litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of actions filed | 4 |  |  |
California class actions |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of actions filed |  | 3 |  |
Delaware Chancery Court class action |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of actions filed |  |  | 1 |
KLA-Tencor | California class actions |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of stockholders filing putative class actions | stockholder |  |  |  | 4

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