Stock-Based Compensation - Outstanding and Exercisable SARs by Grant Price (Details) - SARs - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares/units outstanding (in shares)	3,264	4,636	7,331	9,112
Outstanding, weighted-average grant price per share (in dollars per share)	$ 28.96	$ 26.80	$ 23.72	$ 22.22
Outstanding, weighted- average remaining contractual life (in years)	3 years 2 months 12 days
Exercisable, number (in shares)	2,973
Exercisable, weighted-average grant price per share (in dollars per share)	$ 28.42	$ 25.39	$ 22.44
Exercisable, weighted- average remaining contractual life (in years)	2 years 8 months 12 days
$10.01-$20.00
Share-based Compensation Arrangement by Share-based Payment Award
Grant price range, lower limit (in usd per share)	$ 10.01
Grant price range, lower limit (in usd per share)	$ 20.00
Number of shares/units outstanding (in shares)	759
Outstanding, weighted-average grant price per share (in dollars per share)	$ 17.89
Outstanding, weighted- average remaining contractual life (in years)	3 months 18 days
Exercisable, number (in shares)	759
Exercisable, weighted-average grant price per share (in dollars per share)	$ 17.89
Exercisable, weighted- average remaining contractual life (in years)	3 months 18 days
$20.01-$30.00
Share-based Compensation Arrangement by Share-based Payment Award
Grant price range, lower limit (in usd per share)	$ 20.01
Grant price range, lower limit (in usd per share)	$ 30.00
Number of shares/units outstanding (in shares)	1,177
Outstanding, weighted-average grant price per share (in dollars per share)	$ 26.97
Outstanding, weighted- average remaining contractual life (in years)	1 year 9 months 18 days
Exercisable, number (in shares)	1,177
Exercisable, weighted-average grant price per share (in dollars per share)	$ 26.97
Exercisable, weighted- average remaining contractual life (in years)	1 year 9 months 18 days
$30.01-$40.00
Share-based Compensation Arrangement by Share-based Payment Award
Grant price range, lower limit (in usd per share)	$ 30.01
Grant price range, lower limit (in usd per share)	$ 40.00
Number of shares/units outstanding (in shares)	1,085
Outstanding, weighted-average grant price per share (in dollars per share)	$ 34.28
Outstanding, weighted- average remaining contractual life (in years)	6 years
Exercisable, number (in shares)	794
Exercisable, weighted-average grant price per share (in dollars per share)	$ 34.19
Exercisable, weighted- average remaining contractual life (in years)	5 years 4 months 24 days
Over $40.00
Share-based Compensation Arrangement by Share-based Payment Award
Grant price range, lower limit (in usd per share)	$ 40.00
Number of shares/units outstanding (in shares)	243
Outstanding, weighted-average grant price per share (in dollars per share)	$ 49.51
Outstanding, weighted- average remaining contractual life (in years)	6 years 1 month 6 days
Exercisable, number (in shares)	243
Exercisable, weighted-average grant price per share (in dollars per share)	$ 49.51
Exercisable, weighted- average remaining contractual life (in years)	6 years 1 month 6 days

FIFTH THIRD BANCORP 10-K