Quarterly report pursuant to Section 13 or 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 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss)        
Revenues $ 975,822 $ 876,885 $ 1,945,403 $ 1,627,558
Costs of revenues (347,334) (318,507) (700,783) (596,343)
Interest expense 27,372 30,624 57,948 61,356
Net income (loss) (134,319) 238,251 146,617 416,352
Unrealized Gains (Losses) on Defined Benefit Plans        
Accumulated Other Comprehensive Income (Loss)        
Other comprehensive (income) loss, reclassification adjustment from AOCI, pension and other postretirement benefit plans, net of tax (400) (900) (800) (1,300)
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 397 (1,425) 1,365 (2,906)
Costs of revenues 377 (69) 1,338 (156)
Interest expense 189 189 378 378
Net income (loss) 963 (1,305) 3,081 (2,684)
Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) on available-for-sale securities        
Accumulated Other Comprehensive Income (Loss)        
Other expense (income), net $ (69) $ 30 $ (63) $ 234