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Long-Term Debt and Short-Term Borrowings (Tables)
 9 Months Ended
Sep. 30, 2021
Debt Disclosure [Abstract]  
Schedule of maturities of long-term debt The maturities of long-term debt for the periods subsequent to September 30, 2021 are as follows (in millions):
Remainder of
2021
20222023202420252026
After
2026
Total
$754$1,253$1,942$1,100$1,792$1,511$9,797$18,149