Restructuring Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Restructuring Plan 2014
Restructuring costs
Restructuring charges	$ 80
Restructuring Plan 2014 | Cost of products sold
Restructuring costs
Restructuring charges	17
Restructuring Plan 2014 | Selling, general and administrative expense
Restructuring costs
Restructuring charges	22
Restructuring Plan 2014 | Research and development
Restructuring costs
Restructuring charges	41
Restructuring Plan 2014 and 2013
Restructuring costs
Restructuring charges	25
Restructuring Plan 2014 and 2013 | Cost of products sold
Restructuring costs
Restructuring charges	2
Restructuring Plan 2014 and 2013 | Selling, general and administrative expense
Restructuring costs
Restructuring charges	$ 23