| **Restructuring And Other Charges**  | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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| **Restructuring Charges [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Restructuring And Other Charges      | (8) RESTRUCTURING AND OTHER CHARGESRestructuring and other restructuring plan-related information as of December 31, 2014 was as follows (in millions):   Fiscal  2011Restructuring Other Restructurings and Reorganization    Other Facilities-related Other TotalBalances as of March 31, 2013 $57 $4 $1 $62Charges to operations (2) 1 — (1)Charges settled in cash (8) (3) — (11)Balances as of March 31, 2014 47 2 1 50Charges to operations — — — —Charges settled in cash (22) — (1) (23)Balances as of December 31, 2014 $25 $2 $— $27Fiscal 2011 RestructuringIn fiscal year 2011, we announced a plan focused on the restructuring of certain licensing and developer agreements in an effort to improve the long-term profitability of our packaged goods business. Under this plan, we amended certain licensing and developer agreements. To a much lesser extent, as part of this restructuring we had workforce reductions and facilities closures through March 31, 2011. Substantially all of these exit activities were completed by March 31, 2011.Since the inception of the fiscal 2011 restructuring plan through December 31, 2014, we have incurred charges of $172 million, consisting of (1) $129 million related to the amendment of certain licensing agreements and other intangible asset impairment costs, (2) $31 million related to the amendment of certain developer agreements, and (3) $12 million in employee-related expenses. The $25 million restructuring accrual as of December 31, 2014 is expected to be settled by December 2015.  We do not expect to incur any additional restructuring charges under this plan.Other Restructurings and ReorganizationWe also engaged in various other restructurings and a reorganization based on management decisions made in fiscal years 2013 and 2009. We do not expect to incur any additional restructuring charges under these plans. The $2 million restructuring accrual as of December 31, 2014 related to our other restructuring plans is expected to be settled by April 2020. |

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| - Definition
The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747
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