Other Financial Data Schedule of Other Non-current Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Other Financial Data [Abstract]
Deferred tax liabilities	$ 365	$ 420
Leases	201	204
Taxes payable	194	184
Deferred revenue	128	134
Compensation and benefits	59	105
Other	301	305
Other Liabilities, Noncurrent	$ 1,248	$ 1,352