Stock Options, Restricted Stock, and Dividend Reinvestment Plans - Summary of Stock Option Activity (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Options Outstanding
Beginning of period, outstanding (in shares) | shares	4,980,929
Options granted (in shares) | shares	0
Options exercised (in shares) | shares	(2,349,432)
Options expired/canceled (in shares) | shares	(194,051)
End of period, outstanding (in shares) | shares	2,437,446
Options exercisable (in shares) | shares	1,836,692
Options expected to vest (in shares) | shares	600,754
Weighted Average Exercise Price (per share)
Beginning of period, weighted average exercise price (in dollars per share) | $ / shares	$ 15.81
Options granted, weighted average exercise price (in dollars per share) | $ / shares	0
Options exercised, weighted average exercise price (in dollars per share) | $ / shares	15.36
Options expired/canceled, weighted average exercise price (in dollars per share) | $ / shares	22.35
End of period, weighted average exercise price (in dollars per share) | $ / shares	15.72
Options exercisable, weighted average exercise price (in dollars per share) | $ / shares	15.76
Options expected to vest, weighted average exercise price (in dollars per share) | $ / shares	$ 15.59
Outstanding, weighted average contractual term	3 years 5 months 1 day
Outstanding, aggregate intrinsic value | $	$ 21
Options exercisable, weighted average contractual term	2 years 10 months 17 days
Options exercisable, aggregate intrinsic value | $	$ 16
Options expected to vest, weighted average remaining contractual term	5 years 18 days
Options expected to vest, aggregate intrinsic value | $	$ 5