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Consolidated Statement Of Equity - USD ($)
$ in Millions
Total
General Partner [Member]
AOCI Attributable to Parent [Member]
Limited Partner [Member]
Series A Convertible Preferred Units [Member]
Noncontrolling Interest [Member]
PennTex Acquisition [Member]
General Partner [Member]
PennTex Acquisition [Member]
AOCI Attributable to Parent [Member]
PennTex Acquisition [Member]
Limited Partner [Member]
PennTex Acquisition [Member]
Series A Convertible Preferred Units [Member]
PennTex Acquisition [Member]
Noncontrolling Interest [Member]
Sale of Bakken Pipeline interest [Member]
Sale of Bakken Pipeline interest [Member]
General Partner [Member]
Sale of Bakken Pipeline interest [Member]
AOCI Attributable to Parent [Member]
Sale of Bakken Pipeline interest [Member]
Limited Partner [Member]
Sale of Bakken Pipeline interest [Member]
Series A Convertible Preferred Units [Member]
Sale of Bakken Pipeline interest [Member]
Noncontrolling Interest [Member]
Sale of Rover Pipeline interest [Member]
Sale of Rover Pipeline interest [Member]
General Partner [Member]
Sale of Rover Pipeline interest [Member]
AOCI Attributable to Parent [Member]
Sale of Rover Pipeline interest [Member]
Limited Partner [Member]
Sale of Rover Pipeline interest [Member]
Series A Convertible Preferred Units [Member]
Sale of Rover Pipeline interest [Member]
Noncontrolling Interest [Member]
Balance at Dec. 31, 2016 $ 22,431 $ (3) $ 0 $ (1,871) $ 180 $ 24,125                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                              
Distributions to partners (1,010) (2) 0 (1,008) 0 0                                  
Distributions to noncontrolling interest (2,999) 0 0 0 0 (2,999)                                  
Distributions reinvested 0 0 0 234 (234) 0                                  
Units repurchased under buyback program 0                                            
Partners' Capital Account, Sale of Units 568 0 0 568 0 0                                  
Subsidiary unit transactions 3,235 0 0 (55) (1) 3,291                                  
Capital contributions received from noncontrolling interest 2,202 0 0 0 0 2,202                                  
Other, net (6) 0 0 0 0 (6)                                  
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests (280)           $ 0 $ 0 $ (2) $ 0 $ (278)                        
Acquisition and disposition of noncontrolling interest                       $ (2,000) $ 0 $ 0 $ (42) $ 0 $ (1,958) $ (1,478) $ 0 $ 0 $ (2) $ 0 $ (1,476)
Other comprehensive income, net of tax (5) 0 0 0 0 (5)                                  
Net income 2,366 2 0 915 37 1,412                                  
Balance at Dec. 31, 2017 29,980 (3) 0 (1,643) 450 31,176                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                              
Distributions to partners (1,684) (3) 0 (1,681) 0 0                                  
Distributions to noncontrolling interest (3,117) 0 0 0 0 (3,117)                                  
Distributions reinvested 0 0 0 115 (115)                                  
Units repurchased under buyback program 0                                            
Subsidiary unit transactions 924 0 0 1 0 923                                  
Capital contributions received from noncontrolling interest 649 0 0 0 0 649                                  
Non-cash compensation expense, net of units tendered by employees for tax withholdings 0 0 0 21,869 0 (21,869)                                  
Other, net 61 (2) 1 47 (2) 17                                  
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests (24) 0 0 (119) (7) 102                                  
Other comprehensive income, net of tax (43) 0 (43) 0 0 0                                  
Net income 3,365                                            
Noncontrolling Interest, Increase from Business Combination 832 0 0 0 0 832                                  
Stock Issued During Period, Value, Conversion of Units 0 0 0 589 (589) 0                                  
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excluding Portion Attributable to Redeemable Noncontrolling Interest 3,326 3 0 1,658 33 1,632                                  
Balance at Dec. 31, 2018 30,850 (5) (42) 20,606 0 10,291                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                              
Cumulative Effect of New Accounting Principle in Period of Adoption (54) 0 0 0 0 (54)                                  
Distributions to partners (3,054) (3) 0 (3,051) 0 0                                  
Distributions to noncontrolling interest (1,597) 0 0 0 0 (1,597)                                  
Units repurchased under buyback program (25) 0 0 (25) 0 0                                  
Subsidiary unit transactions 780 0 0 0 0 780                                  
Capital contributions received from noncontrolling interest 348 0 0 0 0 348                                  
Non-cash compensation expense, net of units tendered by employees for tax withholdings 1,471 0 0 652 0 819                                  
Other, net 100 0 0 72 0 28                                  
Acquisition and disposition of noncontrolling interest (93) 0 0 0 0 (93)                                  
Other comprehensive income, net of tax 31 0 31 0 0 0                                  
Net income 4,899                                            
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excluding Portion Attributable to Redeemable Noncontrolling Interest 4,848 4 0 3,588 0 1,256                                  
Balance at Dec. 31, 2019 $ 33,845 $ (4) $ (11) $ 21,842 $ 0 $ 12,018