Fair Value Measurements (Estimated Fair Values Of Financial Instruments Not Recorded At Fair Value In Their Entirety On A Recurring Basis) (Details) - USD ($)
$ in Millions

Sep. 30, 2025

Dec. 31, 2024

Cash and due from banks

$ 986

$ 850

Interest-bearing deposits with banks

4,053

5,954

Total deposits

62,596

63,811

Medium- and long-term debt

5,422

6,673

Carrying Amount

Cash and due from banks

986

850

Interest-bearing deposits with banks

4,053

5,954

Other short-term investments

Total loans

^[1]

50,200

49,849

Demand Deposit Accounts

58,434

59,277

Time Deposits

4,162

4,534

Total deposits

62,596

63,811

Medium- and long-term debt

5,422

6,673

Credit-related financial instruments

(65)

(64)

Estimated Fair Value

Cash and due from banks

986

850

Interest-bearing deposits with banks

4,053

5,954

Other short-term investments

Total loans

^[1]

50,136

49,436

Demand Deposit Accounts

58,434

59,277

Time Deposits

4,165

4,555

Total deposits

62,599

63,832

Medium- and long-term debt

5,527

6,780

Credit-related financial instruments

(65)

(64)

Level 1 | Estimated Fair Value

Cash and due from banks

986

850

Interest-bearing deposits with banks

4,053

5,954

Other short-term investments

Total loans

^[1]

Demand Deposit Accounts

Time Deposits

Total deposits

Medium- and long-term debt

Credit-related financial instruments

Level 2 | Estimated Fair Value

Cash and due from banks

Interest-bearing deposits with banks

Other short-term investments

Total loans

^[1]

Demand Deposit Accounts

58,434

59,277

Time Deposits

4,165

4,555

Total deposits

62,599

63,832

Medium- and long-term debt

5,527

6,780

Credit-related financial instruments

Level 3 | Estimated Fair Value

Cash and due from banks

Interest-bearing deposits with banks

Other short-term investments

Total loans

^[1]

50,136

49,436

Demand Deposit Accounts

Time Deposits

Total deposits

Medium- and long-term debt

Credit-related financial instruments

(65)

(64)

Nonrecurring | Level 3

Total loans

$ 111

$ 158

[1]	Included $111 million and $158 million of loans recorded at fair value on a nonrecurring basis at September 30, 2025 and December 31, 2024, respectively.

COMERICA INC 10-Q