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STATEMENT OF CASH FLOWS (Details) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Cash:    
Cash paid during the period for interest $ 26 $ 32
Cash paid during the period for income taxes 119 115
Non-cash investing and financing activities:    
Capitalized interest and asset retirement obligations incurred 1 0
Property, plant and equipment accrued but unpaid 42 50
Finance lease obligations $ 1 $ 0