Subsequent Events (Details) - $ / shares |
3 Months Ended | 9 Months Ended | |||
---|---|---|---|---|---|
Oct. 26, 2017 |
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
Subsequent Event [Line Items] | |||||
Dividends declared per share (usd per share) | $ 0.29 | $ 0.28 | $ 0.86 | $ 0.83 | |
Subsequent Event [Member] | |||||
Subsequent Event [Line Items] | |||||
Dividends declared per share (usd per share) | $ 0.29 |