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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($)
$ in Millions
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
Partners' Capital Excluding Noncontrolling Interests
Noncontrolling Interests
Total
Balance, beginning of period at Dec. 31, 2014   $ 7,793 $ 340 $ 8,133 $ 58 $ 8,191
Increase (Decrease) in Partners' Capital            
Net income   116 291 407 1 408
Cash distributions to partners   (526) (284) (810) (1) (811)
Sale of common units   1,099 22 1,121   1,121
Other comprehensive income/(loss)   (202) (4) (206)   (206)
Other     2 2   2
Balance, end of period at Jun. 30, 2015   8,280 367 8,647 58 8,705
Balance, beginning of period at Dec. 31, 2015   7,580 301 7,881 58 7,939
Increase (Decrease) in Partners' Capital            
Net income   11 291 302 2 304
Cash distributions to partners   (557) (309) (866) (2) (868)
Sale of Series A preferred units $ 1,509   33 1,542   1,542
Other comprehensive income/(loss)   44 1 45   45
Other   7 1 8   8
Balance, end of period at Jun. 30, 2016 $ 1,509 $ 7,085 $ 318 $ 8,912 $ 58 $ 8,970