| **Royalties And Licenses (Tables)**     | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                    |
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| **Royalties And Licenses [Abstract]**   |                                                                                                                                                                                                                                                                                                                                                              |
| Schedule Of Royalty-Related Assets      | The current and long-term portions of prepaid royalties and minimum guaranteed royalty-related assets, included in other current assets and other assets, consisted of (in millions):  As of December 31, 2014 As of March 31, 2014Other current assets$53 $97Other assets16 58Royalty-related assets$69 $155                       |
| Schedule Of Royalty-Related Liabilities | The current and long-term portions of accrued royalties, included in accrued and other current liabilities and other liabilities, consisted of (in millions):  As of December 31, 2014 As of March 31, 2014Accrued royalties$162 $73Other accrued expenses— 7Other liabilities143 53Royalty-related liabilities$305 $133 |

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Schedule of royalty-related assets
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Schedule of royalty-related liabilities
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No definition available.
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