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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($)
$ in Millions
Total
Partners’ Capital Excluding Noncontrolling Interests
Noncontrolling Interests
Common Units
Limited Partners
Series A Preferred Units
Partners’ Capital Excluding Noncontrolling Interests
Limited Partners
Common Units
Partners’ Capital Excluding Noncontrolling Interests
General Partner
Partners’ Capital Excluding Noncontrolling Interests
Balance, beginning of period at Dec. 31, 2015 $ 7,939 $ 7,881 $ 58     $ 7,580 $ 301
Increase (Decrease) in Partners' Capital              
Net income 602 599 3     209 390
Cash distributions to partners (1,302) (1,299) (3)     (835) (464)
Sale of Series A preferred units 1,542 1,542     $ 1,509   33
Sales of common units 289 289       283 6
Other comprehensive income 0            
Other 4 4     (1) 3 2
Balance, end of period at Sep. 30, 2016 9,074 9,016 58   1,508 7,240 $ 268
Balance, beginning of period at Dec. 31, 2016 8,816 8,759 57   1,508 7,251  
Increase (Decrease) in Partners' Capital              
Net income 667 665 2     665  
Cash distributions to partners (1,170) (1,168) (2)     (1,168)  
Sales of common units 1,664 1,664   $ 1,664   1,664  
Acquisition of interest in Advantage Joint Venture (Note 6) 40 40       40  
Other comprehensive income 256 256       256  
Other 7 7     (2) 9  
Balance, end of period at Sep. 30, 2017 $ 10,280 $ 10,223 $ 57   $ 1,506 $ 8,717