Acquisitions (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	89.00%
Biopolis SL [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	89.00%
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Cost of acquisition paid in cash	$ 92
Cash Acquired from Acquisition	2
Business Acquisition, Purchase Price Allocation, Working Capital	17
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment	23
Goodwill	17
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 33