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Subsequent Events Business Acquisitions (Narrative) (Details) |  | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
May 18, 2018 USD ($) | Mar. 31, 2018 USD ($) employee | Mar. 31, 2018 USD ($) employee | Jun. 30, 2018 USD ($) | Mar. 01, 2018 USD ($) employee $ / shares | Jun. 30, 2017 USD ($)
Microsemi |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Business acquisition, share price (in usd per share) | $ / shares |  |  |  |  | $ 68.78 |
Bridge Loan | Microsemi |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Long term debt (up to) |  |  |  |  | $ 600,000,000 |
Bridge Loan | Term Loan Facility | Microsemi |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Long term debt (up to) |  |  |  |  | $ 5,000,000,000 |
Debt instrument, term (in days) |  | 364 days |  |  |  |
Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 2,774,000,000.000
Revolving Credit Facility | 2020 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | $ 3,122,000,000 | $ 3,122,000,000 |  |  |
Foreign Line of Credit |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 125,000,000 | 125,000,000 |  |  |
Standby Letters of Credit |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | 25,000,000 | 25,000,000 |  |  |
Line of Credit Facility Swingline Loan Sublimit |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  | $ 25,000,000 | 25,000,000 |  |  |
Building |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Purchase of building |  |  | $ 40,800,000 |  |  |
Microsemi |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Number of employees | employee |  | 4,800 | 4,800 |  | 4,800 |
Scenario, Forecast | Microsemi |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Agreement termination fee |  |  |  | $ 290,000,000 |  |
Contingent reimbursement fee |  |  |  | 35,000,000 |  |
Equity value acquired |  |  |  | 8,350,000,000 |  |
Enterprise value |  |  |  | $ 10,150,000,000 |  |
Subsequent Event | Revolving Credit Facility |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 3,800,000,000.0 |  |  |  |  |
Subsequent Event | Revolving Credit Facility | 2023 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | 3,600,000,000 |  |  |  |  |
Subsequent Event | Revolving Credit Facility | 2020 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | 244,000,000 |  |  |  |  |
Subsequent Event | Foreign Line of Credit |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | 250,000,000.0 |  |  |  |  |
Subsequent Event | Standby Letters of Credit |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | 50,000,000.0 |  |  |  |  |
Subsequent Event | Line of Credit Facility Swingline Loan Sublimit |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 25,000,000.0 |  |  |  |  |
Subsequent Event | Base Rate | Minimum | Revolving Credit Facility | 2023 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.00% |  |  |  |  |
Subsequent Event | Base Rate | Minimum | Revolving Credit Facility | 2020 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 0.25% |  |  |  |  |
Subsequent Event | Base Rate | Maximum | Revolving Credit Facility | 2023 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.00% |  |  |  |  |
Subsequent Event | Base Rate | Maximum | Revolving Credit Facility | 2020 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.25% |  |  |  |  |
Subsequent Event | London Interbank Offered Rate (LIBOR) | Minimum | Revolving Credit Facility | 2023 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.00% |  |  |  |  |
Subsequent Event | London Interbank Offered Rate (LIBOR) | Minimum | Revolving Credit Facility | 2020 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.25% |  |  |  |  |
Subsequent Event | London Interbank Offered Rate (LIBOR) | Maximum | Revolving Credit Facility | 2023 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.00% |  |  |  |  |
Subsequent Event | London Interbank Offered Rate (LIBOR) | Maximum | Revolving Credit Facility | 2020 Tranche |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.25% |  |  |  |  |

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