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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   138 145 283 1 284
Distributions   (254) (136) (390) (1) (391)
Sale of common units   1,099 22 1,121   1,121
Other comprehensive income/(loss)   (369) (7) (376)   (376)
Other   6 1 7   7
Balance, end of period at Mar. 31, 2015   8,413 365 8,778 58 8,836
Balance, beginning of period at Dec. 31, 2015   7,580 301 7,881 58 7,939
Increase (Decrease) in Partners' Capital            
Net income   55 147 202 1 203
Distributions   (278) (155) (433) (1) (434)
Sale of Series A preferred units $ 1,509   33 1,542   1,542
Other comprehensive income/(loss)   115 3 118   118
Other   2 1 3   3
Balance, end of period at Mar. 31, 2016 $ 1,509 $ 7,474 $ 330 $ 9,313 $ 58 $ 9,371