Quarterly report pursuant to Section 13 or 15(d)

Financial Statement Components - Effects on net income (loss) of amounts reclassified from AOCI (Details)

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Financial Statement Components - Effects on net income (loss) of amounts reclassified from AOCI (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss)    
Revenues $ 1,413,414 $ 1,093,260
Costs of revenues and operating expenses 1,003,166  
Interest expense 40,350 26,362
Net income attributable to KLA 346,525 395,944
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 200 200
Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) on cash flow hedges from foreign exchange and interest rate contracts(1)    
Accumulated Other Comprehensive Income (Loss)    
Revenues [1] 373 983
Costs of revenues and operating expenses [1] (1,801) (134)
Interest expense [1] (99) 188
Net income attributable to KLA [1] (1,527) 1,037
Reclassification out of accumulated other comprehensive income | Unrealized gains (losses) on available-for-sale securities    
Accumulated Other Comprehensive Income (Loss)    
Other expense (income), net $ (4) $ (481)
[1]
The three months ended September 30, 2019 reflects the new accounting guidance for hedge accounting, which was adopted in the second quarter of fiscal year 2019. For additional details, refer to Note 16, “Derivative Instruments and Hedging Activities” of the Condensed Consolidated Financial Statements.