Litigation and Other Legal Matters (Details)	Dec. 29, 2015 action	Dec. 21, 2015 action	Nov. 10, 2015 action	Oct. 21, 2015 stockholders
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 | stockholders				4