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Supplemental Financial Statement Information (Schedule Of Statements Of Cash Flows) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
NET CASH FLOWS PROVIDED BY OPERATING ACTIVITIES | $ 3,269 | $ 2,905 | $ 2,885
Cash paid for Bakken Pipeline Transaction | (1,398) | (777) | (2,367)
Proceeds from the sale of other assets | 35 | 14 | 54
Contributions to unconsolidated affiliates | 68 | 45 | 334
Capital expenditures | (7,719) | (9,021) | (5,369)
Net cash used in investing activities | (8,930) | (9,683) | (6,868)
Proceeds from borrowings | 25,785 | 26,455 | 18,375
Repayments of long-term debt | (19,076) | (19,828) | (13,886)
Distributions to partners | (1,022) | (1,090) | (821)
Cash received from affiliate notes | 5,317 | 0 | 0
Units repurchased under buyback program | 0 | (1,064) | (1,000)
Debt issuance costs | (52) | (75) | (77)
Net cash provided by financing activities | 5,927 | 6,785 | 3,877
Increase (decrease) in cash and cash equivalents | (118) | (255) | 257
Cash and cash equivalents, beginning of period | 581 | 836 | 579
Cash and cash equivalents, end of period | 463 | 581 | 836
Parent Company [Member] |  |  |
NET CASH FLOWS PROVIDED BY OPERATING ACTIVITIES | 918 | 1,103 | 816
Cash paid for Bakken Pipeline Transaction | 0 | (817) | 0
Contributions to unconsolidated affiliates | 70 | 0 | 118
Capital expenditures | (16) | (19) | 0
Payments to Acquire Additional Interest in Subsidiaries | 0 | 0 | (800)
Net cash used in investing activities | (86) | (836) | (918)
Proceeds from borrowings | 225 | 3,672 | 3,020
Repayments of long-term debt | (210) | (1,985) | (1,142)
Distributions to partners | (1,022) | (1,090) | (821)
Cash received from affiliate notes | 176 | 210 | 54
Units repurchased under buyback program | 0 | (1,064) | (1,000)
Debt issuance costs | 0 | (11) | (15)
Net cash provided by financing activities | (831) | (268) | 96
Increase (decrease) in cash and cash equivalents | 1 | (1) | (6)
Cash and cash equivalents, beginning of period | 1 | 2 | 8
Cash and cash equivalents, end of period | $ 2 | $ 1 | $ 2

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