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Stock-Based Compensation Plans - Nonqualified Stock Options, Assumptions and Other Disclosures (Details) - Nonqualified Stock Options - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Stock-Based Compensation Plans - Disclosures      
Options granted (in shares) 0    
Assumptions used to estimate fair value of stock options granted during period      
Weighted-average expected volatility (as a percent)   34.20% 25.70%
Weighted-average expected term   7 years 7 years
Weighted-average risk-free interest rate (as a percent)   1.20% 1.30%
Weighted-average expected dividend yield (as a percent)   3.82% 4.33%
Weighted-average estimated fair value of stock options granted (in dollars per share)   $ 15.67 $ 9.64
Other nonqualified stock option disclosures      
Unrecognized compensation costs $ 0.8    
Weighted-average service period over which unrecognized compensation costs will be recognized 1 year    
Cash received from stock options exercised $ 141.6 $ 42.2 $ 4.4
Tax benefits realized for the tax deductions from options exercised $ 37.7 $ 9.1 $ 1.4