Commitments And Contingencies (Minimum Contractual Obligations) (Details) $ in Millions	Dec. 31, 2016 USD ($)
Long Term Purchase Commitments
Unrecorded Total	$ 2,414
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	92
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	483
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	493
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	421
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	350
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	314
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	261
Recorded Total	1,141
Recorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	16
Recorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	23
Recorded Unconditional Purchase Obligation, Due in Rolling Year Two	24
Recorded Unconditional Purchase Obligation, Due in Rolling Year Three	25
Recorded Unconditional Purchase Obligation, Due in Rolling Year Four	626
Recorded Unconditional Purchase Obligation, Due in Rolling Year Five	27
Recorded Unconditional Purchase Obligation, Due in Rolling after Year Five	400
TotalUnconditionalPurchaseObligationBalanceSheetAmount	3,555
TotalUnconditionalPurchaseObligationBalanceSheetAmountRemainingForCurrentFiscalYear	108
Total Unconditional PurchaseObligationBalanceSheetAmountOneYearAfterFiscalYearEnd	506
Total Unconditional Purchase Obligation Balance Sheet Amount Two Years After Fiscal Year End	517
TotalUnconditionalPurchaseObligationBalanceSheetAmountThreeYearsAfterFiscalYearEnd	446
TotalUnconditionalPurchaseObligationBalanceSheetAmountFourYearsAfterFiscalYearEnd	976
Total Unconditional Purchase Obligation Balance Sheet Amount Five Years After Fiscal Year End	341
TotalUnconditionalPurchaseObligationBalanceSheetAmountThereafter	661
Developer/Licensor Commitments - Royalty and Non-Royalty Bearing
Long Term Purchase Commitments
Unrecorded Total	1,338
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	50
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	284
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	295
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	251
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	182
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	196
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	80
Marketing
Long Term Purchase Commitments
Unrecorded Total	469
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	6
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	76
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	109
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	89
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	92
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	73
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	24
Operating leases
Long Term Purchase Commitments
Unrecorded Total	220
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	8
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	38
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	33
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	30
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	28
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	22
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	61
Senior Notes Interest
Long Term Purchase Commitments
Unrecorded Total	272
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	11
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	41
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	41
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	41
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	41
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	19
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	78
Other unrecorded purchase obligations
Long Term Purchase Commitments
Unrecorded Total	115
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	17
Unrecorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	44
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Two	15
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Three	10
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Four	7
Unrecorded Unconditional Purchase Obligation, Due in Rolling Year Five	4
Unrecorded Unconditional Purchase Obligation, Due in Rolling after Year Five	18
Senior Notes and Interest
Long Term Purchase Commitments
Recorded Total	1,010
Senior Notes Interest
Long Term Purchase Commitments
Recorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	10
Senior Notes
Long Term Purchase Commitments
Recorded Unconditional Purchase Obligation, Due in Rolling Year Four	600
Recorded Unconditional Purchase Obligation, Due in Rolling after Year Five	400
Licensing and lease obligations
Long Term Purchase Commitments
Recorded Total	131
Recorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	6
Recorded Unconditional Purchase Obligation, Due in Next Rolling Twelve Months	23
Recorded Unconditional Purchase Obligation, Due in Rolling Year Two	24
Recorded Unconditional Purchase Obligation, Due in Rolling Year Three	25
Recorded Unconditional Purchase Obligation, Due in Rolling Year Four	26
Recorded Unconditional Purchase Obligation, Due in Rolling Year Five	27
Recorded Unconditional Purchase Obligation, Due in Rolling after Year Five	$ 0