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Fair Value of Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of Fair value of Cash and Cash Equivalents by Balance Sheet Grouping

Cash and cash equivalents consist of the following:

 

 

 

December 31, 2021

 

 

December 31, 2020

 

 

 

 

Cost

 

 

Fair Value

 

 

Cost

 

 

Fair Value

 

 

Cash and cash equivalents:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cash and overnight deposits

 

$

1,241,565

 

 

$

1,241,565

 

 

$

602,112

 

 

$

602,112

 

 

Corporate commercial paper

 

 

423,261

 

 

 

423,279

 

 

 

872,287

 

 

 

872,350

 

 

Time deposits

 

 

63,866

 

 

 

63,866

 

 

 

53,392

 

 

 

53,392

 

 

Total cash and cash equivalents

 

$

1,728,692

 

 

$

1,728,710

 

 

$

1,527,791

 

 

$

1,527,854