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 | |||