Restructuring And Other Charges (Narrative) (Details) - Fiscal Two Thousand And Eleven Restructuring [Member] $ in Millions	Mar. 31, 2015 USD ($)
Restructuring And Other Charges
Restructuring and Related Cost, Cost Incurred to Date	$ 172
Amended Licensing Agreements And Other Asset Impairment [Member]
Restructuring And Other Charges
Restructuring and Related Cost, Cost Incurred to Date	129
Developer Commitments [Member]
Restructuring And Other Charges
Restructuring and Related Cost, Cost Incurred to Date	31
Employee Severance [Member]
Restructuring And Other Charges
Restructuring and Related Cost, Cost Incurred to Date	$ 12

Amount of costs incurred to date for the specified restructuring cost.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: 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(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

Name:	us-gaap_RestructuringAndRelatedCostCostIncurredToDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant