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Marketable Securities - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Jun. 30, 2016
Marketable Securities |  |  |
Amortized Cost |  | $ 2,240,303 | $ 2,079,863
Gross Unrealized Gains |  | 334 | 4,423
Gross Unrealized Losses |  | (6,235) | (176)
Fair Value |  | 2,234,402 | 2,084,110
Add: Time deposits | [1] | 30,814 | 77,131
Less: Cash equivalents, Amortized Cost |  | 609,272 | 778,451
Less: Cash equivalents, Gross Unrealized Gains |  | 0 | 1
Less: Cash equivalents, Gross Unrealized Losses |  | 0 | (17)
Less: Cash equivalents, Fair Value |  | 609,272 | 778,435
Marketable securities, Amortized Cost |  | 1,661,845 | 1,378,543
Marketable securities, Gross Unrealized Gains |  | 334 | 4,422
Marketable securities, Gross Unrealized Losses |  | (6,235) | (159)
Marketable securities, Fair Value |  | 1,655,944 | 1,382,806
Corporate debt securities |  |  |
Marketable Securities |  |  |
Amortized Cost |  | 936,011 | 676,259
Gross Unrealized Gains |  | 205 | 2,372
Gross Unrealized Losses |  | (2,969) | (157)
Fair Value |  | 933,247 | 678,474
Money market and other |  |  |
Marketable Securities |  |  |
Amortized Cost |  | 552,189 | 626,156
Gross Unrealized Gains |  | 0 | 0
Gross Unrealized Losses |  | 0 | 0
Fair Value |  | 552,189 | 626,156
Municipal securities |  |  |
Marketable Securities |  |  |
Amortized Cost |  | 1,004 | 5,014
Gross Unrealized Gains |  | 0 | 2
Gross Unrealized Losses |  | 0 | 0
Fair Value |  | 1,004 | 5,016
Sovereign securities |  |  |
Marketable Securities |  |  |
Amortized Cost |  | 58,129 | 41,224
Gross Unrealized Gains |  | 1 | 38
Gross Unrealized Losses |  | (106) | (5)
Fair Value |  | 58,024 | 41,257
U.S. Treasury securities |  |  |
Marketable Securities |  |  |
Amortized Cost |  | 312,438 | 326,321
Gross Unrealized Gains |  | 71 | 1,181
Gross Unrealized Losses |  | (1,203) | 0
Fair Value |  | 311,306 | 327,502
U.S. Government agency securities |  |  |
Marketable Securities |  |  |
Amortized Cost |  | 380,532 | 404,889
Gross Unrealized Gains |  | 57 | 830
Gross Unrealized Losses |  | (1,957) | (14)
Fair Value |  | $ 378,632 | $ 405,705
Corporate and Government securities |  |  |
Marketable Securities |  |  |
Maturity term (in years) |  | 3 years |
[1] | Time deposits excluded from fair value measurements.

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