Goodwill and Intangible Assets (Goodwill balance by business segment) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Goodwill Information
Goodwill acquired during the period which is deductible for tax purposes	$ 628
Goodwill
Balance at the beginning of the period	7,050
Acquisition activity	2,505
Translation and other	(201)
Balance at the end of the period	9,354
Industrial
Goodwill
Balance at the beginning of the period	2,037
Acquisition activity	629
Translation and other	(84)
Balance at the end of the period	2,582
Safety and Graphics
Goodwill
Balance at the beginning of the period	1,650
Acquisition activity	1,782
Translation and other	(41)
Balance at the end of the period	3,391
Electronics and Energy
Goodwill
Balance at the beginning of the period	1,559
Translation and other	(26)
Balance at the end of the period	1,533
Health Care
Goodwill
Balance at the beginning of the period	1,589
Acquisition activity	94
Translation and other	(44)
Balance at the end of the period	1,639
Consumer
Goodwill
Balance at the beginning of the period	215
Translation and other	(6)
Balance at the end of the period	$ 209