Segment Information (Reconciliation Of Brand Segment Profit To Consolidated Operating Income) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]                      
Depreciation                 $ (126) $ (126) $ (118)
Acquisition-related contingent consideration (1)   (1) (1)     (44) 7 (3) (35) (64)
Gain on strategic investments, net       (1) 2       0 0 39
Restructuring and other charges                 0 1 (27)
Stock-based compensation                 (144) (150) (164)
Royalty Related Loss And Or Impairment Charges                 (122) (35)  
Operating income 400 162 24 362 344 (292) (252) 233 948 33 121
EA Segment                      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]                      
Net Revenue before Revenue Deferral                 4,319 4,021 3,793
Depreciation                 (126) (126) (118)
Other expenses                 (3,117) (3,178) (3,308)
Operating income                 1,076 717 367
Other Reconciling Items To Consolidated Operating Income (Loss) [Member]                      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]                      
Revenue deferral                 (3,536) (3,350) (3,022)
Recognition of revenue deferral                 3,732 2,904 3,026
Depreciation and amortization                 (66) (76) (123)
Acquisition-related contingent consideration                 3 35 64
Restructuring and other charges                 0 1 (27)
Stock-based compensation                 (144) (150) (164)
Other expenses                 5 (48) 0
Operating income                 $ 948 $ 33 $ 121