Condensed Consolidated Statement of Shareholders' Equity Consolidated Statement of Shareholders Equity (Parenthetical) - $ / shares |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Statement of Stockholders' Equity [Abstract] | ||||
| Dividends declared per common share | $ 1.16 | $ 1.01 | $ 2.32 | $ 2.02 |