Investment Securities (Tables)

12 Months Ended

Dec. 31, 2025

Investments, Debt and Equity Securities [Abstract]

Schedule of available for sale securities by type

The following is a summary of investment securities as of December 31, 2025 and 2024:

TABLE 4.1: INVESTMENT SECURITIES

	2025								2024
Description of Securities (Millions)	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Available-for-sale debt securities:
State and municipal obligations	$	54	$	1	$	(7)	$	48	$	57	$	1	$	(9)	$	49
U.S. Government agency obligations	3		—		—		3		4		—		—		4
U.S. Government treasury obligations	138		1		—		138		289		—		(2)		287
Mortgage-backed securities (a)	10		—		—		9		11		—		(1)		10
Foreign government bonds and obligations	717		—		—		717		765		—		—		765
Other (b)	81		—		—		81		77		—		—		77
Equity securities (c)	54		—		(8)		46		53		4		(9)		48
Total	$	1,056	$	2	$	(16)	$	1,043	$	1,256	$	5	$	(21)	$	1,240

(a)Represents mortgage-backed securities guaranteed by Fannie Mae, Freddie Mac or Ginnie Mae.

(b)Represents investments in debt securities issued by Community Development Financial Institutions.

(c)Equity securities comprise investments in common stock and mutual funds.

Available-for-sale securities, continuous unrealized loss position, fair value

The following table provides information about our AFS debt securities with gross unrealized losses and the length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2025 and 2024:

TABLE 4.2: AFS DEBT SECURITIES WITH GROSS UNREALIZED LOSSES BY DURATION

	2025								2024
	Less than 12 months				12 months or more				Less than 12 months				12 months or more
Description of Securities (Millions)	Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses
State and municipal obligations	$	—	$	—	$	26	$	(7)	$	—	$	—	$	22	$	(9)
U.S. Government treasury obligations	—		—		—		—		—		—		123		(2)
Mortgage-backed securities	—		—		—		—		—		—		7		(1)
Total	$	—	$	—	$	26	$	(7)	$	—	$	—	$	152	$	(12)

Contractual maturities of investment securities

Weighted average yields and contractual maturities for AFS debt securities with stated maturities as of December 31, 2025 were as follows:

TABLE 4.3: WEIGHTED AVERAGE YIELDS AND CONTRACTUAL MATURITIES OF AFS DEBT SECURITIES

(Millions)	Due in 1 year or less			Due after 1 year through 5 years			Due after 5 years through 10 years			Due after 10 years			Total
State and municipal obligations (a)	$	—		$	21		$	1		$	26		$	48
U.S. Government agency obligations (a)	—			—			—			3			3
U.S. Government treasury obligations	80			59			—			—			138
Mortgage-backed securities (a)(b)	—			—			—			9			9
Foreign government bonds and obligations	714			3			—			—			717
Other (c)	32			44			5			—			81
Total Estimated Fair Value	$	826		$	127		$	7		$	37		$	997
Total Cost	$	825		$	126		$	7		$	45		$	1,002
Weighted average yield (d)	5.31		%	4.17		%	3.48		%	2.69		%	5.04		%

(a)The expected payments on state and municipal obligations, U.S. Government agency obligations and mortgage-backed securities may not coincide with their contractual maturities because the issuers have the right to call or prepay certain obligations.

(b)Represents mortgage-backed securities guaranteed by Fannie Mae, Freddie Mac or Ginnie Mae.

(c)Represents investments in debt securities issued by Community Development Financial Institutions.

(d)Weighted average yields for investment securities have been calculated using the effective yield on the date of purchase. Yields on tax-exempt investment securities have been computed on a tax-equivalent basis using the U.S. federal statutory tax rate of 21 percent.