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COVID-19 PANDEMIC (Tables)
12 Months Ended
Dec. 31, 2021
Risks and Uncertainties [Abstract]  
Schedule of Funds Received Under CARES Payroll Support Programs
Total funds contracted from the Treasury under the Payroll Support Programs are allocated as follows (in millions):
GrantsLoansWarrantsTotal Proceeds
PSP 1$757 $293 $$1,059 
PSP 2457 160 626 
PSP 3431 147 585 
Total$1,645 $600 $25 $2,270 
Restructuring and Related Costs The table below presents a roll forward of the outstanding voluntary leave liability (in millions):
Twelve Months Ended
December 31, 2021
Total voluntary leave liability balance at January 1$127 
Cash payments(105)
Charges and adjustments(10)
Total voluntary leave liability balance at December 31$12