|
Supplemental Equity and Comprehensive Income Information (Details 7) (USD $)
In Billions, except Per Share data, unless otherwise specified |
1 Months Ended | 3 Months Ended | ||
|---|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Supplemental Equity and Comprehensive Income Information | ||||
| Dividends that have been declared but not yet paid (in dollars per share) | $ 1.025 | $ 0.855 | ||
| Dividends paid in current period (in dollars per share) | $ 1.025 | $ 0.855 | ||
| Increase of Current Liabilities due to dividend declared but not paid | $ 0.6 | $ 0.6 | ||