Annual report pursuant to Section 13 and 15(d)

Financial Statement Components - Effects on Net Income of Amounts Reclassified from AOCI (Details)

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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, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss)                      
Revenues $ 1,070,004 $ 1,021,294 $ 975,822 $ 969,581 $ 938,647 $ 913,809 $ 876,885 $ 750,673 $ 4,036,701 $ 3,480,014 $ 2,984,493
Costs of revenues                 (1,447,369) (1,287,547) (1,163,391)
Interest expense                 114,376 122,476 122,887
Net income $ 348,767 [1] $ 306,881 [1] $ (134,319) [1] $ 280,936 [1] $ 256,162 $ 253,562 $ 238,251 $ 178,101 802,265 926,076 704,422
Other expense (income), net                 (33,113) (19,461) $ (20,634)
Other comprehensive (income) loss, reclassification adjustment from AOCI, pension and other postretirement benefit plans, net of tax                 1,800 1,900  
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                 955 2,846  
Costs of revenues                 2,137 (378)  
Interest expense                 754 754  
Net income                 3,846 3,222  
Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) on available-for-sale securities                      
Accumulated Other Comprehensive Income (Loss)                      
Other expense (income), net                 $ (209) $ 191  
[1] The Company had net loss of $134.3 million in the second quarter of the fiscal year ended June 30, 2018, primarily as a result of the income tax effects from the enacted tax reform legislation through the Tax Cuts and Jobs Act, which was signed into law on December 22, 2017.