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REVENUE RECOGNITION - Changes in Deferred Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Change in Contract with Customer, Liability [Abstract]        
Balance at the beginning of the period $ 420 $ 425 $ 279 $ 361
Revenue recognized that was included in the deferred revenue balance at the beginning of the period (25) (26) (198) (268)
Revenue deferred (released) during the period (30) (37) 278 269
Other (4) 0 2 0
Balance at the end of the period $ 361 $ 362 $ 361 $ 362