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CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($)
$ in Millions
Total
Cumulative Effect, Period of Adoption, Adjustment
Cumulative Effect, Period of Adoption, Adjusted Balance
Noncontrolling Interests
Noncontrolling Interests
Cumulative Effect, Period of Adoption, Adjustment
Noncontrolling Interests
Cumulative Effect, Period of Adoption, Adjusted Balance
Class A Shares
Limited Partners
Class A Shares
Limited Partners
Cumulative Effect, Period of Adoption, Adjustment
Class A Shares
Limited Partners
Cumulative Effect, Period of Adoption, Adjusted Balance
Balance, beginning of period at Dec. 31, 2017 $ 12,358 $ 113   $ 10,663 $ 89   $ 1,695 $ 24  
Increase (Decrease) in Partners' Capital                  
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201705Member                
Net income/(loss) $ 2,107     1,773     334    
Distributions (Note 12) (1,069)     (880)     (189)    
Deferred tax asset (Note 15) 22     0     22    
Change in ownership interest in connection with Exchange Right exercises (Note 12) 0     (7)     7    
Other comprehensive income/(loss) (260)     (203)     (57)    
Equity-indexed compensation expense 56     46     10    
Other (8)     (8)     0    
Balance, end of period at Dec. 31, 2018 13,319   $ 12,471 11,473   $ 10,752 1,846   $ 1,719
Increase (Decrease) in Partners' Capital                  
Net income/(loss) 2,062     1,731     331    
Distributions (Note 12) (1,208)     (977)     (231)    
Deferred tax asset (Note 15) 86     0     86    
Change in ownership interest in connection with Exchange Right exercises (Note 12) 0     (101)     101    
Other comprehensive income/(loss) 97     74     23    
Equity-indexed compensation expense 18     13     5    
Sale of noncontrolling interest in a subsidiary (Note 12) 128     128     0    
Other (17)     (11)     (6)    
Balance, end of period at Dec. 31, 2019 14,485     12,330     2,155    
Increase (Decrease) in Partners' Capital                  
Net income/(loss) (2,440)     (1,872)     (568)    
Distributions (Note 12) (863)     (697)     (166)    
Deferred tax asset (Note 15) 16     0     16    
Change in ownership interest in connection with Exchange Right exercises (Note 12) 0     (10)     10    
Other comprehensive income/(loss) 15     9     6    
Equity-indexed compensation expense 20     14     6    
Repurchase of common units by a subsidiary (Note 12) (50)     (54)     4    
Contributions from noncontrolling interests (Note 12) 12     12     0    
Other (5)     (6)     1    
Balance, end of period at Dec. 31, 2020 $ 11,190     $ 9,726     $ 1,464