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Leases (Tables)
 12 Months Ended
Dec. 31, 2021
Leases [Abstract]  
Summary of remaining operating lease payments A summary of our remaining future operating lease payments reconciled to lease liabilities as of December 31, 2021 and December 31, 2020 follows (in millions).

 

 

Year 1

 

 

Year 2

 

 

Year 3

 

 

Year 4

 

 

Year 5

 

 

Thereafter

 

 

Total

lease

payments

 

 

Amount

representing

interest

 

 

Lease

liabilities

 

December 31:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2021

 

$

1,238

 

 

$

1,038

 

 

$

835

 

 

$

631

 

 

$

418

 

 

$

1,571

 

 

$

5,731

 

 

$

(740

)

 

$

4,991

 

2020

 

 

1,342

 

 

 

1,111

 

 

 

905

 

 

 

725

 

 

 

544

 

 

 

1,691

 

 

 

6,318

 

 

 

(849

)

 

 

5,469

 

 
Components of operating lease costs

Components of operating lease costs for the three years ending December 31, 2021, by type, are summarized in the following table (in millions).

 

 

 

2021

 

 

2020

 

 

2019

 

 

Operating lease cost

 

$

1,426

 

 

$

1,413

 

 

$

1,459

 

 

Short-term lease cost

 

 

154

 

 

 

145

 

 

 

178

 

 

Variable lease cost

 

 

223

 

 

 

228

 

 

 

276

 

 

Sublease income

 

 

(10

)

 

 

(10

)

 

 

(24

)

 

Total lease cost

 

$

1,793

 

 

$

1,776

 

 

$

1,889