Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Effective income tax rate			26.50%	23.90%
Noncash Pension Settlement Charge - tax effect			$ 352
Noncash Pension Settlement Charge - before tax	$ 968	$ 0	968	$ 0
Net tax charge related to Asbestos Settlement Funding			$ 128