Quarter

Six Months

2022

2021

2022

2021

Revenues:

National Group

$

7,349

$

7,300

$

14,855

$

14,356

American Group

6,657

6,504

13,273

12,795

Corporate and other

814

631

1,637

1,261

$

14,820

$

14,435

$

29,765

$

28,412

Equity in earnings of affiliates:

National Group

$

(1

)

$

(9

)

$

(2

)

$

(16

)

American Group

(9

)

(12

)

(18

)

(24

)

Corporate and other

2

(1

)

1

(3

)

$

(8

)

$

(22

)

$

(19

)

$

(43

)

Adjusted segment EBITDA:

National Group

$

1,540

$

1,845

$

3,106

$

3,550

American Group

1,542

1,593

3,028

3,094

Corporate and other

(40

)

(219

)

(148

)

(373

)

$

3,042

$

3,219

$

5,986

$

6,271

Depreciation and amortization:

National Group

$

364

$

339

$

719

$

662

American Group

304

296

605

589

Corporate and other

70

77

146

158

$

738

$

712

$

1,470

$

1,409

Adjusted segment EBITDA

$

3,042

$

3,219

$

5,986

$

6,271

Depreciation and amortization

738

712

1,470

1,409

Interest expense

434

386

842

770

Losses (gains) on sales of facilities

32

(8

)

22

(10

)

Losses on retirement of debt

78

12

78

12

Income before income taxes

$

1,760

$

2,117

$

3,574

$

4,090