Compensation Plans - Senior Executive Compensation Plan (Details) - USD ($) shares in Thousands, $ in Millions	1 Months Ended
	Dec. 31, 2023	Feb. 29, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, outstanding (in shares)		5,065
Potential maximum increase to common shares outstanding from outstanding awards (in shares)		19,153
Restricted stock with future service required
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non option equity, outstanding (in shares)		2,383
RSUs with future service required
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non option equity, outstanding (in shares)		5,006
RSU with no future service required
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non option equity, outstanding (in shares)		9,082
Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value	$ 11.7
Vesting period (in years)	3 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value	$ 8.8
Target level of ROTE	10.00%
ROTE threshold level	7.50%
Performance Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target level of ROTE	15.00%
Percentage of target PSUs	150.00%
Performance Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target level of ROTE	7.50%
Percentage of target PSUs	75.00%