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Redeemable Noncontrolling Interests - Redeemable Noncontrolling Interests Activity (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Increase (Decrease) in Temporary Equity [Roll Forward]  
Beginning balance $ 0
Acquired 252
Distributions paid to redeemable noncontrolling interests (7)
Share of income 17
Ending balance $ 262