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Financial Statement Components - Effects on Net Income of Amounts Reclassified from AOCI (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 938,647 | $ 913,809 | $ 876,885 | $ 750,673 | $ 919,171 | $ 712,433 | $ 710,245 | $ 642,644 | $ 3,480,014 | $ 2,984,493 | $ 2,814,049
Costs of revenues |  |  |  |  |  |  |  |  | (1,287,547) | (1,163,391) | (1,215,229)
Interest expense |  |  |  |  |  |  |  |  | 122,476 | 122,887 | 106,009
Net income | $ 256,162 | $ 253,562 | $ 238,251 | $ 178,101 | $ 271,541 | $ 175,777 | $ 152,207 | $ 104,897 | 926,076 | 704,422 | 366,158
Other expense (income), net |  |  |  |  |  |  |  |  | (19,461) | (20,634) | $ (10,469)
Other comprehensive (income) loss, reclassification adjustment from AOCI, pension and other postretirement benefit plans, net of tax |  |  |  |  |  |  |  |  | 1,900 | 1,400 |
Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) on cash flow hedges from foreign exchange and interest rate contracts |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,846 | (2,926) |
Costs of revenues |  |  |  |  |  |  |  |  | (378) | (1,551) |
Interest expense |  |  |  |  |  |  |  |  | 754 | 755 |
Net income |  |  |  |  |  |  |  |  | 3,222 | (3,722) |
Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) on available-for-sale securities |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |  |  |  |
Other expense (income), net |  |  |  |  |  |  |  |  | $ 191 | $ 312 |

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