Share-Based Compensation Plans - Schedule of Valuation Assumptions for Non-Qualified Stock Options (Details) - Non-qualified Stock Options $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) grant_date $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.48%	2.25%	1.95%
Dividend yield	0.46%	0.20%	0.18%
Volatility factor	27.97%	26.46%	27.45%
Expected term	5 years	5 years	5 years
Number of options granted (in shares) | shares	779,300	287,800	153,700
Weighted average grant date fair value (in dollars per share) | $ / shares	$ 5.31	$ 15.39	$ 17.47
Total intrinsic value of options exercised | $	$ 0.0	$ 0.0	$ 1.7
Number of grant dates | grant_date			2