Contingencies and Certain Commitments - Product Litigation, Commercial and Other Matters, Legal Proceedings (Details)	12 Months Ended
	Dec. 31, 2018 manufacturer
Pfizer and Hospira and Various Other Manufacturers Versus Mississippi Attorney General [Member] | Docetaxel [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of defendants other than main defendant	8