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Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Feb. 10, 2022
Equity, Class of Treasury Stock [Line Items]
Cash dividends paid	$ 90.7	$ 90.8	$ 91.7	$ 95.1	$ 95.9	$ 96.6	$ 273.2	$ 287.6
Common stock dividends (USD per share)	$ 0.235	$ 0.235	$ 0.235	$ 0.235	$ 0.235	$ 0.235
Stock repurchased and retired, publicly announced authorizations (shares)							9.6	9.6
Stock repurchased and retired, publicly announced authorizations, value excluding commissions							$ 176.8	$ 225.0
Stock repurchased and retired, publicly announced authorizations, average cost per share excluding commissions (USD per share)							$ 18.45	$ 23.45
Stock repurchase program expiration date							Dec. 31, 2021
Authorized through December 31, 2024
Equity, Class of Treasury Stock [Line Items]
Stock repurchases authorized amount									$ 1,000.0
Remaining amount available under share repurchase authorization	$ 823.2						$ 823.2

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Aggregate dividends declared during the period for each share of common stock outstanding.

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