Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
Statement of Stockholders' Equity [Abstract] | |||
Common stock, par value (in usd per share) | $ 2 | $ 2 | $ 2 |
Dividends declared, per share (in usd per share) | $ 1.01 | $ 1.00 | $ 0.96 |