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Business Combinations (Detail) |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 20, 2015 USD ($) $ / shares | Jun. 26, 2016 USD ($) | May 13, 2016 USD ($) | Apr. 26, 2016 USD ($) | Mar. 31, 2015 USD ($) | Mar. 12, 2014 USD ($)
Selling, general, and administrative |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition related costs |  | $ 51,000,000 |  |  |  |
Revolving credit facility |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Revolving unsecured credit facility |  |  |  | $ 750,000,000 |  | $ 300,000,000
Senior unsecured term loan facility | Amended and restated term loan agreement |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Principal amount |  |  | $ 1,530,000,000 |  |  |
Senior notes |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Principal amount | $ 2,400,000,000 |  |  |  | $ 1,000,000,000 |
KLA-Tencor Corporation |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Converted stock multiplier, mixed consideration | 0.5 |  |  |  |  |
Conversion amount, mixed consideration (usd per share) | $ / shares | $ 32.00 |  |  |  |  |
Converted stock multiplier, all stock consideration | 0.5 |  |  |  |  |
Converted amount multiplier, all stock consideration (usd per share) | $ / shares | $ 32.00 |  |  |  |  |
Measurement period | 5 days |  |  |  |  |
Conversion amount (usd per share) | $ / shares | $ 32.00 |  |  |  |  |
Converted stock multiplier | 0.5 |  |  |  |  |
Debt financing | $ 4,000,000,000 |  |  |  |  |
KLA-Tencor Corporation | Senior notes | Financial obligation | Scenario, Plan |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Principal amount | 2,500,000,000.0 |  |  |  |  |
KLA-Tencor Corporation | Merger agreement termination |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Termination fee | $ 290,000,000 |  |  |  |  |

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