Acquisitions And Divestitures (Tables)
 3 Months Ended
Mar. 31, 2015
Antaya Technologies Corp.  
Business Acquisition [Line Items]  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
The acquisition was accounted for as a business combination, with the total purchase price allocated on a preliminary basis using information available, in the fourth quarter of 2014. The purchase price and related allocation were finalized in the three months ended March 31, 2015, and resulted in no adjustments from the amounts disclosed as of December 31, 2014. The final purchase price and related allocation are shown below (in millions):
Assets acquired and liabilities assumed
Purchase price, cash consideration
$
140

Purchase price, fair value of contingent consideration
11

Total purchase price
$
151

 
 
Definite-lived intangible assets
$
75

Other assets purchased and liabilities assumed, net
(17
)
Identifiable net assets acquired
58

Goodwill resulting from purchase
93

Total purchase price allocation
$
151
Unwired Holdings, Inc.  
Business Acquisition [Line Items]  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
The acquisition was accounted for as a business combination, with the total purchase price allocated on a preliminary basis using information available, in the fourth quarter of 2014. Minor adjustments were recorded in the first quarter of 2015 to goodwill and other assets purchased and liabilities assumed, from the amounts disclosed as of December 31, 2014. These adjustments were not significant for any period presented after the acquisition date. The preliminary purchase price and related allocation to the acquired net assets of Unwired based on their estimated fair values is shown below (in millions):
Assets acquired and liabilities assumed
Purchase price, cash consideration
$
190

Purchase price, acquired cash, excess net working capital and certain tax benefits
19

Total purchase price
$
209

 
 
Definite-lived intangible assets
$
63

Other assets purchased and liabilities assumed, net
19

Identifiable net assets acquired
82

Goodwill resulting from purchase
127

Total purchase price allocation
$
209