Goodwill and Intangible Assets - Schedule of Intangible Assets by Type (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016		Dec. 31, 2015
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	$ 999		$ 1,243
Finite-Lived Intangible Assets, Accumulated Amortization	560		660
Finite-Lived Intangible Assets, Net	439		583
Customer Relationships and Trade Names
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Impairment of Intangible Assets, Finite-lived	101
Technology-Based Intangible Assets
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	793		866
Finite-Lived Intangible Assets, Accumulated Amortization	426		452
Finite-Lived Intangible Assets, Net	367		414
Customer Relationships
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	94	[1]	251
Finite-Lived Intangible Assets, Accumulated Amortization	38	[1]	106
Finite-Lived Intangible Assets, Net	56	[1]	145
Trade Names
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	96		108
Finite-Lived Intangible Assets, Accumulated Amortization	83		89
Finite-Lived Intangible Assets, Net	13		19
Other Intangible Assets
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	16		18
Finite-Lived Intangible Assets, Accumulated Amortization	13		13
Finite-Lived Intangible Assets, Net	$ 3		$ 5

[1] During the first six months of 2016, we recorded impairments relating to various intangible assets totaling $101 million. See Note 3. "Impairment and Restructuring Charges" for further discussion.