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Supplemental Cash Flow Information Related to Leases (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:        
Operating cash flows from operating leases $ 441 $ 482 $ 1,007 $ 973
Operating cash flows from finance leases 107 94 211 186
Financing cash flows from finance leases 222 153 422 289
Right-of-use assets obtained in exchange for lease obligations:        
Operating leases 1,559 1,578 2,730 2,256
Finance leases $ 985 $ 1,193 $ 2,374 $ 1,828