Share Repurchases and Dividends (Details) - USD ($) |
1 Months Ended | 12 Months Ended | |||
---|---|---|---|---|---|
Oct. 31, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Oct. 31, 2017 |
|
Stockholders' Equity Note [Abstract] | |||||
Number of shares repurchased (in shares) | 4,900,000 | 10,700,000 | |||
Amount paid | $ 399,400,000 | $ 736,900,000 | |||
Weighted average cost per share (in dollars per share) | $ 82.13 | $ 69.06 | |||
Shares pending settlement (in shares) | 0 | ||||
Shares adding to existing share repurchase program | $ 2,000,000,000.0 | ||||
Remaining authorized purchase capacity | $ 704,600,000 | ||||
Quarterly dividend per share (in dollars per share) | $ 0.405 | $ 1.56 | $ 1.44 | $ 1.33 | |
Cash dividends declared | $ 499,400,000 | $ 468,400,000 | $ 446,300,000 | ||
Quarterly dividend payable | $ 129,200,000 | $ 121,000,000.0 |