Equity - Cash Dividends (Details) - $ / shares |
3 Months Ended | 12 Months Ended | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nov. 01, 2019 |
Sep. 06, 2019 |
Jun. 20, 2019 |
Feb. 21, 2019 |
Nov. 02, 2018 |
Sep. 07, 2018 |
Jun. 14, 2018 |
Feb. 15, 2018 |
Oct. 27, 2017 |
Sep. 08, 2017 |
Jun. 22, 2017 |
Feb. 16, 2017 |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Equity [Abstract] | |||||||||||||||||||||||
| Cash dividends declared per common share (in dollars per share) | $ 1.18 | $ 1.07 | $ 1.07 | $ 1.07 | $ 1.07 | $ 0.96 | $ 0.96 | $ 0.96 | $ 0.71 | $ 0.64 | $ 0.64 | $ 0.64 | $ 1.18 | $ 1.07 | $ 1.07 | $ 1.07 | $ 1.07 | $ 0.96 | $ 0.96 | $ 0.96 | $ 4.39 | $ 3.95 | $ 2.63 |