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Restructuring and Other Charges (Tables)
9 Months Ended
Sep. 30, 2021
Restructuring and Related Activities [Abstract]  
Schedule of changes in reserves The following table summarizes the changes in the reserve related to the Company’s employee severance and other separation costs:
Nine Months Ended
September 30,
(In millions)20212020
Balance at beginning of period$27 $14 
Severance and other separation costs45 105 
Non-cash adjustments— (6)
Cash payments(48)(88)
Balance at end of period$24 $25