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Business Combinations (Details) - USD ($)
$ in Millions
Mar. 17, 2020
Feb. 14, 2021
Business Combinations [Abstract]    
Payments to Acquire Businesses, Gross $ 998  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets   $ 286
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities   237
Business Acquisition, Goodwill, Expected Tax Deductible Amount   $ 949