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Share-Based Compensation (Summary of the Corporation's Stock Option Activity and Related Information) (Details) - Stock Options
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2022
USD ($)
$ / shares
shares
Number of options outstanding at January 1, 2022 | shares 2,244
Options granted | shares 183
Options forfeited or expired | shares (32)
Options exercised | shares (387)
Number of options outstanding at December 31, 2022 | shares 2,008
Number of options exercisable at December 31, 2022 | shares 1,379
Options outstanding at January 1, 2022 (Weighted-average exercise price) | $ / shares $ 57.50
Options granted (Weighted-average exercise price) | $ / shares 92.58
Options forfeited or expired (Weighted-average exercise price) | $ / shares 76.55
Options exercised (Weighted-average exercise price) | $ / shares 50.64
Options outstanding at December 31, 2022 Weighted-average exercise price) | $ / shares 61.71
Options exercisable at December 31, 2022 (Weighted-average exercise price) | $ / shares $ 57.20
Weighted-average remaining contractual term in years at December 31, 2022 5 years 1 month 6 days
Weighted-average remaining contractual term in years exercisable at December 31, 2022 3 years 10 months 24 days
Aggregate intrinsic value outstanding at December 31, 2022 | $ $ 22
Aggregate intrinsic value exercisable at December 31, 2022 | $ $ 20