Commitments And Contingencies (Minimum Contractual Obligations) (Details) (USD $) In Millions, unless otherwise specified									3 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2013 Developer/Licensor Commitments	Jun. 30, 2013 Marketing	Jun. 30, 2013 Leases	Jun. 30, 2013 Convertible Notes Interest		Jun. 30, 2013 Other Unrecorded Purchase Obligations	Jun. 30, 2013 0.75% Convertible Senior Notes Due 2016		Jul. 14, 2011 0.75% Convertible Senior Notes Due 2016	Jun. 30, 2013 Other Recorded Purchase Obligations
Long Term Purchase Commitments
Unrecorded Portion for 2014 (remaining nine months)	$ 206		$ 114	$ 29	$ 38	$ 5	[1]	$ 20
Unrecorded Portion for 2015	294		186	50	43	5	[1]	10
Unrecorded Portion for 2016	355		280	35	33	5	[1]	2
Unrecorded Portion for 2017	145		105	20	18	2	[1]	0
Unrecorded Portion for 2018	125		93	20	12	0	[1]	0
Unrecorded Portion for 2019	91		62	21	8	0	[1]	0
Unrecorded Portion for Thereafter	489		436	44	9	0	[1]	0
Unrecorded Total	1,705		1,276	219	161	17	[1]	32
Recorded Portion for 2014 (remaining nine months)	21								0	[1]		21	[2]
Recorded Portion for 2015	17								0	[1]		17	[2]
Recorded Portion for 2016	5								0	[1]		5	[2]
Recorded Portion for 2017	655								633	[1]		22	[2]
Recorded Portion for 2018	1								0	[1]		1	[2]
Recorded Portion for 2019	1								0	[1]		1	[2]
Recorded Portion for Thereafter	0								0	[1]		0	[2]
Recorded Total	700								633	[1]		67	[2]
Total for 2014 (remaining nine months)	227
Total for 2015	311
Total for 2016	360
Total for 2017	800
Total for 2018	126
Total for 2019	92
Total for Thereafter	489
Total Commitments	2,405
Contractual interest rate of 0.75% Convertible Senior Notes due 2016	0.75%	0.75%							0.75%
Convertible Senior Notes due description									2016
Other accrued liabilities, current	257	338				2
Principal amount	632.5	632.5									632.5
Debt instrument, unamortized discount	69	74
Amount that would reduce lease commitments due to minimum sub-lease rentals for unutilized office space resulting from reorganization activities due in the future under non-cancelable sub-leases	$ 7

[1] Included in the $17 million coupon interest on the 0.75% Convertible Senior Notes due 2016 is $2 million of accrued interest recognized as of June 30, 2013. 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 $69 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 $7 million due in the future from third parties under non-cancelable sub-leases.