Business Segments (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Asset write-offs and accelerated depreciation:
Total Segment Asset Write Offs and Accelerated Depreciation	$ 5	$ 4	$ 10	$ 6
Europe, Middle East and Africa
Asset write-offs and accelerated depreciation:
Total Segment Asset Write Offs and Accelerated Depreciation	5	0	10	0
Asia Pacific
Asset write-offs and accelerated depreciation:
Total Segment Asset Write Offs and Accelerated Depreciation	$ 0	$ 4	$ 0	$ 6