Quarter

Six Months

2023

2022

2023

2022

Revenues:

National Group

$

4,372

$

4,088

$

8,988

$

8,290

Atlantic Group

5,038

4,700

10,147

9,386

American Group

5,536

5,205

10,735

10,411

Corporate and other

915

827

1,582

1,678

$

15,861

$

14,820

$

31,452

$

29,765

Equity in losses (earnings) of affiliates:

National Group

$

(1

)

$

(1

)

$

(2

)

$

(1

)

Atlantic Group

(1

)

(1

)

(2

)

(1

)

American Group

(10

)

(9

)

(22

)

(18

)

Corporate and other

19

3

51

1

$

7

$

(8

)

$

25

$

(19

)

Adjusted segment EBITDA:

National Group

$

878

$

867

$

2,027

$

1,822

Atlantic Group

975

969

2,061

1,819

American Group

1,319

1,338

2,452

2,654

Corporate and other

(116

)

(132

)

(312

)

(309

)

$

3,056

$

3,042

$

6,228

$

5,986

Depreciation and amortization:

National Group

$

208

$

194

$

415

$

391

Atlantic Group

247

233

486

455

American Group

238

233

475

465

Corporate and other

70

78

143

159

$

763

$

738

$

1,519

$

1,470

Adjusted segment EBITDA

$

3,056

$

3,042

$

6,228

$

5,986

Depreciation and amortization

763

738

1,519

1,470

Interest expense

485

434

964

842

Losses (gains) on sales of facilities

(1

)

32

14

22

Losses on retirement of debt

—

78

—

78

Income before income taxes

$

1,809

$

1,760

$

3,731

$

3,574