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Borrowings and Lines of Credit - Schedule of Maturities and Repayments of Principal on Long-term Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Debt Disclosure [Abstract]    
2020 $ 0  
2021 2  
2022 2  
2023 1,501  
2024 1  
Thereafter 4,800  
Total $ 6,306 $ 5