Commitments And Contingencies (Minimum Contractual Obligations) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2014 Developer/Licensor Commitments	Sep. 30, 2014 Marketing	Sep. 30, 2014 Operating leases	Sep. 30, 2014 0.75% Convertible Senior Notes due 2016 interest		Sep. 30, 2014 Other unrecorded purchase obligations	Sep. 30, 2014 Convertible Debt		Sep. 30, 2014 Licensing and lease obligations		Jul. 14, 2011 Convertible Debt
Long Term Purchase Commitments
Unrecorded Portion for 2015 (remaining six months)	$ 123		$ 51	$ 30	$ 24	$ 2	[1]	$ 16
Unrecorded Portion for 2016	388		263	39	46	5	[1]	35
Unrecorded Portion for 2017	392		274	64	32	2	[1]	20
Unrecorded Portion for 2018	203		147	21	22	0	[1]	13
Unrecorded Portion for 2019	160		112	21	16	0	[1]	11
Unrecorded Portion for 2020	107		76	21	9	0	[1]	1
Unrecorded Portion for Thereafter	204		143	43	18	0	[1]	0
Unrecorded Total	1,577		1,066	239	167	9	[1]	96
Recorded Portion for 2015 (remaining six months)	11								0	[1]	11	[2]
Recorded Portion for 2016	22								0	[1]	22	[2]
Recorded Portion for 2017	656								633	[1]	23	[2]
Recorded Portion for 2018	23								0	[1]	23	[2]
Recorded Portion for 2019	24								0	[1]	24	[2]
Recorded Portion for 2020	25								0	[1]	25	[2]
Recorded Portion for Thereafter	53								0	[1]	53	[2]
Recorded Total	814								633	[1]	181	[2]
Total for 2015 (remaining six months)	134
Total for 2016	410
Total for 2017	1,048
Total for 2018	226
Total for 2019	184
Total for 2020	132
Total for Thereafter	257
Total Commitments	2,391
Contractual interest rate of 0.75% Convertible Senior Notes due 2016													0.75%
Principal amount	$ 633	$ 633

[1] Included in the $9 million coupon interest on the 0.75% Convertible Senior Notes due 2016 is $1 million of accrued interest recognized as of September 30, 2014. We will be obligated to pay the $632.5 million principal amount of the 0.75% Convertible Senior Notes due 2016 in cash and any excess conversion value in shares of our common stock upon redemption of the Notes at maturity on July 15, 2016 or upon earlier redemption. The $632.5 million principal amount excludes $42 million of unamortized discount of the liability component. See Note 12 for additional information regarding our 0.75% Convertible Senior Notes due 2016.

[2] See Note 8 for additional information regarding recognized commitments resulting from our restructuring plans. Lease commitments have not been reduced for approximately $6 million due in the future from third parties under non-cancelable sub-leases. See Note 9 for additional information regarding recognized obligations from our licensing-related commitments.