Acquisitions (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Business Acquisition [Line Items]
Cost of acquisition paid in cash	$ 84	$ 0
Purchase of noncontrolling interest, period after acquisition (in years)	2 years
Harvest Innovations [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	90.00%
Total cost of acquisitions	$ 84
Business Acquisition, Purchase Price Allocation, Working Capital	7
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment	11
Goodwill	40
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	46
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	$ 20
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	10.00%