Commitments And Contingencies (Minimum Contractual Obligations) (Details) $ in Millions	Jun. 30, 2020 USD ($)
Long-term Purchase Commitment [Line Items]
Unrecorded Total	$ 3,015
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	419
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	555
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	473
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	452
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	451
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	376
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	289
Recorded Total	1,365
Recorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	714
Recorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	112
Recorded Unconditional Purchase Obligation, Due in Rolling Year Two	37
Recorded Unconditional Purchase Obligation, Due in Rolling Year Three	34
Recorded Unconditional Purchase Obligation, Due in Rolling Year Four	29
Recorded Unconditional Purchase Obligation, Due in Rolling Year Five	424
Recorded Unconditional Purchase Obligation, Due in Rolling after Year Five	15
TotalUnconditionalPurchaseObligationBalanceSheetAmount	4,380
TotalUnconditionalPurchaseObligationBalanceSheetAmountRemainingForCurrentFiscalYear	1,133
Total Unconditional PurchaseObligationBalanceSheetAmountOneYearAfterFiscalYearEnd	667
Total Unconditional Purchase Obligation Balance Sheet Amount Two Years After Fiscal Year End	510
TotalUnconditionalPurchaseObligationBalanceSheetAmountThreeYearsAfterFiscalYearEnd	486
TotalUnconditionalPurchaseObligationBalanceSheetAmountFourYearsAfterFiscalYearEnd	480
Total Unconditional Purchase Obligation Balance Sheet Amount Five Years After Fiscal Year End	800
TotalUnconditionalPurchaseObligationBalanceSheetAmountThereafter	$ 304
Minimum
Long-term Purchase Commitment [Line Items]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	12 years
Maximum
Long-term Purchase Commitment [Line Items]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	15 years
Developer Commitments
Long-term Purchase Commitment [Line Items]
Unrecorded Total	$ 1,840
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	212
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	329
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	305
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	298
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	308
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	261
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	127
Marketing [Member]
Long-term Purchase Commitment [Line Items]
Unrecorded Total	705
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	121
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	136
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	117
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	116
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	105
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	78
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	32
Senior Notes Interest [Member]
Long-term Purchase Commitment [Line Items]
Unrecorded Total	124
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	28
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	20
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	19
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	19
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	19
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	19
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	0
Operating Lease Imputed Interest [Member] [Member]
Long-term Purchase Commitment [Line Items]
Unrecorded Total	19
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	5
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	5
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	3
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	2
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	2
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	1
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	1
Other Unrecorded Purchase Obligations [Member]
Long-term Purchase Commitment [Line Items]
Unrecorded Total	152
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	53
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	65
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	21
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	5
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	4
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	4
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	0
Senior Notes Principal And Interest [Member]
Long-term Purchase Commitment [Line Items]
Recorded Total	1,014
Recorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	614
Recorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	0
Recorded Unconditional Purchase Obligation, Due in Rolling Year Two	0
Recorded Unconditional Purchase Obligation, Due in Rolling Year Three	0
Recorded Unconditional Purchase Obligation, Due in Rolling Year Four	0
Recorded Unconditional Purchase Obligation, Due in Rolling Year Five	400
Recorded Unconditional Purchase Obligation, Due in Rolling after Year Five	0
Operating Lease [Member]
Long-term Purchase Commitment [Line Items]
Unrecorded Total	175
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	0
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	0
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	8
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	12
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	13
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	13
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	129
Recorded Total	238
Recorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	58
Recorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	61
Recorded Unconditional Purchase Obligation, Due in Rolling Year Two	34
Recorded Unconditional Purchase Obligation, Due in Rolling Year Three	30
Recorded Unconditional Purchase Obligation, Due in Rolling Year Four	23
Recorded Unconditional Purchase Obligation, Due in Rolling Year Five	17
Recorded Unconditional Purchase Obligation, Due in Rolling after Year Five	15
Transition And Other Taxes [Member]
Long-term Purchase Commitment [Line Items]
Recorded Total	66
Recorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	22
Recorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	24
Recorded Unconditional Purchase Obligation, Due in Rolling Year Two	3
Recorded Unconditional Purchase Obligation, Due in Rolling Year Three	4
Recorded Unconditional Purchase Obligation, Due in Rolling Year Four	6
Recorded Unconditional Purchase Obligation, Due in Rolling Year Five	7
Recorded Unconditional Purchase Obligation, Due in Rolling after Year Five	0
License obligations [Member]
Long-term Purchase Commitment [Line Items]
Recorded Total	47
Recorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	20
Recorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	27
Recorded Unconditional Purchase Obligation, Due in Rolling Year Two	0
Recorded Unconditional Purchase Obligation, Due in Rolling Year Three	0
Recorded Unconditional Purchase Obligation, Due in Rolling Year Four	0
Recorded Unconditional Purchase Obligation, Due in Rolling Year Five	0
Recorded Unconditional Purchase Obligation, Due in Rolling after Year Five	$ 0