Stock-Based Compensation Plans (Summary of Stock Option Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Shares
Shares, outstanding at beginning of year (in shares)	4,535	4,533	5,435
Shares, granted (in shares)	1,219	1,434	1,571
Shares, exercised (in shares)	(530)	(1,184)	(2,077)
Shares, forfeited (in shares)	(352)	(248)	(396)
Shares, outstanding at end of year (in shares)	4,872	4,535	4,533
Shares, exercisable at end of year (in shares)	1,960	1,380	1,358
Wtd. Avg Grant Date Fair Value
Wtd. avg. ex. price, outstanding at beginning of year (in dollars per share)	$ 27	$ 23	$ 20
Wtd. avg. ex. price, granted (in dollars per share)	27	34	26
Wtd. avg. ex. price, exercised (in dollars per share)	21	20	18
Wtd. avg. ex. price, forfeited (in dollars per share)	28	27	22
Wtd. avg. ex. price, outstanding at end of year (in dollars per share)	28	27	23
Wtd. avg. ex. price, exercisable at end of year (in dollars per share)	$ 26	$ 23	$ 20
Option expiration period, years	3 years 1 month 6 days	3 years 4 months 24 days	3 years 4 months 24 days
Wtd. avg. remaining contract life, exercisable at end of year	2 years 4 months 24 days	2 years 6 months	2 years 3 months 18 days
Aggregate intrinsic value, exercised	$ 4,065	$ 17,289	$ 23,861
Aggregate intrinsic value, outstanding at end of year	8,928	35,283	48,501
Aggregate intrinsic value, exercisable at end of year	$ 5,864	$ 16,433	$ 18,334