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Debt Securities (Tables)
6 Months Ended
Jun. 30, 2022
Investments Debt And Equity Securities [Abstract]  
Investments in Debt Securities, Classified as Available-For-Sale

Investments in debt securities, classified as available-for-sale, are as follows:

 

(in millions)

 

Amortized
cost

 

 

Gross unrealized

 

 

Estimated
fair value

 

 

 

 

Gains

 

 

Losses

 

 

 

June 30, 2022

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U.S. Treasury bonds

 

$

155

 

 

$

 

 

$

(8

)

 

$

147

 

Municipal bonds

 

 

1,609

 

 

 

2

 

 

 

(149

)

 

 

1,462

 

Foreign government bonds

 

 

217

 

 

 

 

 

 

(17

)

 

 

200

 

Governmental agency bonds

 

 

141

 

 

 

 

 

 

(12

)

 

 

129

 

Governmental agency mortgage-backed securities

 

 

5,539

 

 

 

3

 

 

 

(492

)

 

 

5,050

 

U.S. corporate debt securities

 

 

1,096

 

 

 

 

 

 

(93

)

 

 

1,003

 

Foreign corporate debt securities

 

 

500

 

 

 

 

 

 

(41

)

 

 

459

 

 

 

$

9,257

 

 

$

5

 

 

$

(812

)

 

$

8,450

 

December 31, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U.S. Treasury bonds

 

$

123

 

 

$

1

 

 

$

(1

)

 

$

123

 

Municipal bonds

 

 

1,607

 

 

 

59

 

 

 

(17

)

 

 

1,649

 

Foreign government bonds

 

 

228

 

 

 

2

 

 

 

(3

)

 

 

227

 

Governmental agency bonds

 

 

175

 

 

 

3

 

 

 

(1

)

 

 

177

 

Governmental agency mortgage-backed securities

 

 

5,620

 

 

 

34

 

 

 

(47

)

 

 

5,607

 

U.S. corporate debt securities

 

 

1,071

 

 

 

19

 

 

 

(9

)

 

 

1,081

 

Foreign corporate debt securities

 

 

493

 

 

 

9

 

 

 

(4

)

 

 

498

 

 

 

$

9,317

 

 

$

127

 

 

$

(82

)

 

$

9,362

 

Gross Unrealized Losses on Investments in Debt Securities

Investments in debt securities in an unrealized loss position, based on length of time in such position, are as follows:

 

 

 

Less than 12 months

 

 

12 months or longer

 

 

Total

 

(in millions)

 

Estimated

fair value

 

 

Unrealized

losses

 

 

Estimated

fair value

 

 

Unrealized

losses

 

 

Estimated

fair value

 

 

Unrealized

losses

 

June 30, 2022

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U.S. Treasury bonds

 

$

114

 

 

$

(7

)

 

$

10

 

 

$

(1

)

 

$

124

 

 

$

(8

)

Municipal bonds

 

 

1,213

 

 

 

(136

)

 

 

58

 

 

 

(13

)

 

 

1,271

 

 

 

(149

)

Foreign government bonds

 

 

136

 

 

 

(10

)

 

 

33

 

 

 

(7

)

 

 

169

 

 

 

(17

)

Governmental agency bonds

 

 

125

 

 

 

(11

)

 

 

4

 

 

 

(1

)

 

 

129

 

 

 

(12

)

Governmental agency mortgage-backed securities

 

 

4,304

 

 

 

(414

)

 

 

477

 

 

 

(78

)

 

 

4,781

 

 

 

(492

)

U.S. corporate debt securities

 

 

887

 

 

 

(88

)

 

 

30

 

 

 

(5

)

 

 

917

 

 

 

(93

)

Foreign corporate debt securities

 

 

420

 

 

 

(38

)

 

 

21

 

 

 

(3

)

 

 

441

 

 

 

(41

)

 

 

$

7,199

 

 

$

(704

)

 

$

633

 

 

$

(108

)

 

$

7,832

 

 

$

(812

)

December 31, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U.S. Treasury bonds

 

$

76

 

 

$

(1

)

 

$

 

 

$

 

 

$

76

 

 

$

(1

)

Municipal bonds

 

 

684

 

 

 

(17

)

 

 

 

 

 

 

 

 

684

 

 

 

(17

)

Foreign government bonds

 

 

103

 

 

 

(1

)

 

 

33

 

 

 

(2

)

 

 

136

 

 

 

(3

)

Governmental agency bonds

 

 

73

 

 

 

(1

)

 

 

 

 

 

 

 

 

73

 

 

 

(1

)

Governmental agency mortgage-backed securities

 

 

4,036

 

 

 

(47

)

 

 

 

 

 

 

 

 

4,036

 

 

 

(47

)

U.S. corporate debt securities

 

 

533

 

 

 

(9

)

 

 

 

 

 

 

 

 

533

 

 

 

(9

)

Foreign corporate debt securities

 

 

234

 

 

 

(4

)

 

 

 

 

 

 

 

 

234

 

 

 

(4

)

 

 

$

5,739

 

 

$

(80

)

 

$

33

 

 

$

(2

)

 

$

5,772

 

 

$

(82

)

Investments in Debt Securities by Contractual Maturity

Investments in debt securities at June 30, 2022, by contractual maturities, are as follows:

 

(in millions)

 

Due in one

year or less

 

 

Due after

one through

five years

 

 

Due after

five through

ten years

 

 

Due after

ten years

 

 

Total

 

U.S. Treasury bonds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

$

60

 

 

$

59

 

 

$

25

 

 

$

11

 

 

$

155

 

Estimated fair value

 

$

60

 

 

$

55

 

 

$

22

 

 

$

10

 

 

$

147

 

Municipal bonds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

 

21

 

 

 

146

 

 

 

813

 

 

 

629

 

 

 

1,609

 

Estimated fair value

 

 

21

 

 

 

141

 

 

 

744

 

 

 

556

 

 

 

1,462

 

Foreign government bonds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

 

26

 

 

 

108

 

 

 

71

 

 

 

12

 

 

 

217

 

Estimated fair value

 

 

26

 

 

 

105

 

 

 

60

 

 

 

9

 

 

 

200

 

Governmental agency bonds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

 

1

 

 

 

74

 

 

 

7

 

 

 

59

 

 

 

141

 

Estimated fair value

 

 

1

 

 

 

69

 

 

 

7

 

 

 

52

 

 

 

129

 

U.S. corporate debt securities

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

 

47

 

 

 

648

 

 

 

310

 

 

 

91

 

 

 

1,096

 

Estimated fair value

 

 

47

 

 

 

603

 

 

 

278

 

 

 

75

 

 

 

1,003

 

Foreign corporate debt securities

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

 

35

 

 

 

297

 

 

 

116

 

 

 

52

 

 

 

500

 

Estimated fair value

 

 

35

 

 

 

278

 

 

 

103

 

 

 

43

 

 

 

459

 

Total debt securities excluding mortgage-backed securities

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

$

190

 

 

$

1,332

 

 

$

1,342

 

 

$

854

 

 

$

3,718

 

Estimated fair value

 

$

190

 

 

$

1,251

 

 

$

1,214

 

 

$

745

 

 

$

3,400

 

Total mortgage-backed securities

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5,539

 

Estimated fair value

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5,050

 

Total debt securities

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amortized cost

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

$

9,257

 

Estimated fair value

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

$

8,450

 

Composition of Debt Securities Portfolio by Credit Rating Agencies

The composition of the debt securities portfolio at June 30, 2022, by credit rating, is as follows:

 

 

 

A- or higher

 

 

BBB+ to BBB-

 

 

Non-Investment Grade

 

 

Total

 

 

(dollars in millions)

 

Estimated

fair value

 

 

Percentage

 

 

Estimated

fair value

 

 

Percentage

 

 

Estimated

fair value

 

 

Percentage

 

 

Estimated

fair value

 

 

U.S. Treasury bonds

 

$

147

 

 

 

100.0

 

 

$

 

 

 

 

 

$

 

 

 

 

 

$

147

 

 

Municipal bonds

 

 

1,417

 

 

 

96.9

 

 

 

45

 

 

 

3.1

 

 

 

 

 

 

 

 

 

1,462

 

 

Foreign government bonds

 

 

192

 

 

 

96.0

 

 

 

5

 

 

 

2.5

 

 

 

3

 

 

 

1.5

 

 

 

200

 

 

Governmental agency bonds

 

 

129

 

 

 

100.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

129

 

 

Governmental agency mortgage-backed securities

 

 

5,050

 

 

 

100.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5,050

 

 

U.S. corporate debt securities

 

 

434

 

 

 

43.3

 

 

 

390

 

 

 

38.9

 

 

 

179

 

 

 

17.8

 

 

 

1,003

 

 

Foreign corporate debt securities

 

 

187

 

 

 

40.7

 

 

 

235

 

 

 

51.2

 

 

 

37

 

 

 

8.1

 

 

 

459

 

 

 

 

$

7,556

 

 

 

89.4

 

 

$

675

 

 

 

8.0

 

 

$

219

 

 

 

2.6

 

 

$

8,450

 

 

Composition of Debt Securities Portfolio in Unrealized Loss Position by Credit Rating Agencies

The composition of the debt securities portfolio in an unrealized loss position at June 30, 2022, by credit rating, is as follows:

 

 

 

A- or higher

 

 

BBB+ to BBB-

 

 

Non-Investment Grade

 

 

Total

 

 

(dollars in millions)

 

Estimated

fair value

 

 

Percentage

 

 

Estimated

fair value

 

 

Percentage

 

 

Estimated

fair value

 

 

Percentage

 

 

Estimated

fair value

 

 

U.S. Treasury bonds

 

$

124

 

 

 

100.0

 

 

$

 

 

 

 

 

$

 

 

 

 

 

$

124

 

 

Municipal bonds

 

 

1,231

 

 

 

96.9

 

 

 

40

 

 

 

3.1

 

 

 

 

 

 

 

 

 

1,271

 

 

Foreign government bonds

 

 

161

 

 

 

95.2

 

 

 

5

 

 

 

3.0

 

 

 

3

 

 

 

1.8

 

 

 

169

 

 

Governmental agency bonds

 

 

129

 

 

 

100.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

129

 

 

Governmental agency mortgage-backed securities

 

 

4,781

 

 

 

100.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4,781

 

 

U.S. corporate debt securities

 

 

380

 

 

 

41.4

 

 

 

359

 

 

 

39.2

 

 

 

178

 

 

 

19.4

 

 

 

917

 

 

Foreign corporate debt securities

 

 

180

 

 

 

40.8

 

 

 

224

 

 

 

50.8

 

 

 

37

 

 

 

8.4

 

 

 

441

 

 

 

 

$

6,986

 

 

 

89.2

 

 

$

628

 

 

 

8.0

 

 

$

218

 

 

 

2.8

 

 

$

7,832