| **Commitments And Contingencies (Tables)**              | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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| **Commitments and Contingencies Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Minimum Contractual Obligations                         | The following table summarizes our minimum contractual obligations as of September 30, 2016 (in millions):    Fiscal Years Ending March 31,   2017               (Remaining             Total six mos.) 2018 2019 2020 2021 2022 ThereafterUnrecognized commitments               Developer/licensor commitments$1,427 $66 $315 $300 $251 $210 $206 $79Marketing commitments503 29 79 111 91 93 74 26Operating leases234 16 38 34 31 29 23 63Senior Notes interest278 17 41 41 41 41 19 78Other purchase obligations93 25 18 13 9 7 4 17Total unrecognized commitments2,535 153 491 499 423 380 326 263                Recognized commitments               Senior Notes principal and interest1,004 4 — — — 600 — 400Licensing and lease obligations (a)136 11 23 24 25 26 27 —Total recognized commitments1,140 15 23 24 25 626 27 400                Total commitments$3,675 $168 $514 $523 $448 $1,006 $353 $663 |

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| - References
No definition available.
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| - Definition
Tabular disclosure of unconditional purchase obligations that are not recognized as a liability on the balance sheet, including the nature and significant terms of an unconditional purchase obligation; the amount of the fixed and determinable portion of the obligation as of the date of the latest balance sheet presented in the aggregate and, if determinable, for each of the five succeeding fiscal years; the nature of any variable components of the obligation; the amount purchased under the obligation (for example, the take-or-pay or throughput contract) for the reporting period; and may include the amount of imputed interest necessary to reduce the obligation to present value.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25287-109308Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308
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