Consolidated Statements Of Changes In Equity (Parenthetical) - $ / shares |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
Dividends declared per common share | $ 0.58 | $ 0.54 | $ 0.50 |
Retained Earnings [Member] | |||
Dividends declared per common share | $ 0.58000 | $ 0.54000 | $ 0.5000 |