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Regulatory Restrictions (Tables)
3 Months Ended
Mar. 31, 2020
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]  
Schedule of compliance with Regulatory Capital Requirements
The table below summarizes our actual and required capital ratios under the Basel III Capital Rules. The ratios presented below include the effects of our election to utilize the five-year CECL transition described above.
 
 
Actual
 
For Capital Adequacy Purposes
 
Required to be Considered Well Capitalized
(dollars in thousands)
 
Capital Amount
Ratio
 
Capital Amount
Ratio
 
Capital Amount
Ratio
March 31, 2020
 
 
 
 
 
 
 
 
 
CET1
 
 
 
 
 
 
 
 
 
Company
 
$
2,646,323

9.27
%
 
$
1,998,473

7.00
%
 
N/A

N/A

Bank
 
2,673,198

9.37
%
 
1,996,495

7.00
%
 
1,853,888

6.50
%
Total capital (to risk-weighted assets)
 
 
 
 
 
 
 
 
 
Company
 
3,415,854

11.96
%
 
2,997,710

10.50
%
 
N/A

N/A

Bank
 
3,283,989

11.51
%
 
2,994,742

10.50
%
 
2,852,135

10.00
%
Tier 1 capital (to risk-weighted assets)
 
 
 
 
 
 
 
 
 
Company
 
2,901,225

10.16
%
 
2,426,717

8.50
%
 
N/A

N/A

Bank
 
2,828,100

9.92
%
 
2,424,315

8.50
%
 
2,281,708

8.00
%
Tier 1 capital (to average assets)(1)
 
 
 
 
 
 
 
 
 
Company
 
2,901,225

8.48
%
 
1,368,689

4.00
%
 
N/A

N/A

Bank
 
2,828,100

8.27
%
 
1,368,145

4.00
%
 
1,710,181

5.00
%
December 31, 2019
 
 
 
 
 
 
 
 
 
CET1
 
 
 
 
 
 
 
 
 
Company
 
$
2,653,999

8.88
%
 
$
2,091,591

7.00
%
 
N/A

N/A

Bank
 
2,676,513

8.96
%
 
2,090,870

7.00
%
 
1,941,522

6.50
%
Total capital (to risk-weighted assets)
 
 
 
 
 
 
 
 
 
Company
 
3,398,345

11.37
%
 
3,137,926

10.50
%
 
N/A

N/A

Bank
 
3,262,144

10.92
%
 
3,136,305

10.50
%
 
2,986,957

10.00
%
Tier 1 capital (to risk-weighted assets)
 
 
 
 
 
 
 
 
 
Company
 
2,912,529

9.75
%
 
2,540,226

8.50
%
 
N/A

N/A

Bank
 
2,835,043

9.49
%
 
2,538,913

8.50
%
 
2,389,565

8.00
%
Tier 1 capital (to average assets)(1)
 
 
 
 
 
 
 
 
 
Company
 
2,912,529

8.42
%
 
1,383,640

4.00
%
 
N/A

N/A

Bank
 
2,835,043

8.20
%
 
1,383,190

4.00
%
 
1,728,988

5.00
%

(1)
The Tier 1 capital ratio (to average assets) is not impacted by the Basel III Capital Rules; however, the Federal Reserve Board and the FDIC may require the Company and the Bank, respectively, to maintain a Tier 1 capital ratio (to average assets) above the required minimum.