v3.3.1.900

Summary of Significant Accounting Policies, Narrative (Details) $ in Millions |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jul. 22, 2015 | Dec. 02, 2014 facility | Jun. 19, 2013 | Dec. 31, 2015 USD ($) terminals systems system facility shares | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Nov. 12, 2015 terminals
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | terminals |  |  |  |  | 29 |  |  |  |
Unamortized debt issuance costs | [1] |  |  |  | $ (39) | $ (44) |  |  |
Deferred income tax expense |  |  |  |  | 1 |  |  |  |
Capitalized interest costs |  |  |  |  | 9 | 6 |  | $ 2 |
Goodwill |  |  |  |  | 130 | 164 | [2] |  |
Pollution liability insurance deductible |  |  |  |  | 1 |  |  |  |
Pollution liabilities insurance coverage loss limit |  |  |  |  | 150 |  |  |  |
Debt, fair Value |  |  |  |  | 2,800 | 2,600 |  |  |
Debt, carrying value |  |  |  |  | $ 2,900 | 2,600 |  |  |
Finite-Lived intangible asset, useful life (years) |  |  |  |  | 35 years |  |  |  |
Amortization expense |  |  |  |  | $ 29 |  |  |  |
Amortization expense, 2016 |  |  |  |  | 29 |  |  |  |
Amortization expense, 2017 |  |  |  |  | 29 |  |  |  |
Amortization expense, 2018 |  |  |  |  | 29 |  |  |  |
Amortization expense, 2019 |  |  |  |  | 29 |  |  |  |
Amortization expense, 2020 |  |  |  |  | 29 |  |  |  |
Asset retirement obligations |  |  |  |  |  | 30 |  |  |
Reimbursements from Tesoro |  |  |  |  | 34 | 26 |  | 4 |
Capital contributions by affiliate | [3] |  |  |  | 22 | 26 |  | 5 |
Unit-based compensation expense | [3] |  |  |  | $ 6 | 2 |  | $ 2 |
Units available for future grants (units) | shares |  |  |  |  | 212,310 |  |  |  |
Minimum |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Financial instruments, outstanding term |  |  |  |  | 90 days |  |  |  |
Property, plant and equipment, estimated useful life (years) |  |  |  |  | 3 years |  |  |  |
Maximum |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Cash equivalents maturity period (months) |  |  |  |  | 3 months |  |  |  |
Percent of trade payables outstanding |  |  |  |  | 4.00% |  |  |  |
Percent of trade receivables outstanding |  |  |  |  | 1.00% |  |  |  |
Property, plant and equipment, estimated useful life (years) |  |  |  |  | 28 years |  |  |  |
High plains System |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | system |  |  |  |  | 1 |  |  |  |
Williston Gathering System |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | system |  |  |  |  | 1 |  |  |  |
Uinta Basin Gathering System |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | systems |  |  |  |  | 1 |  |  |  |
Green River System |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | system |  |  |  |  | 1 |  |  |  |
Rockies Natural Gas Business Acquisition |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 121 |  |  |  |
Effective date of acquisition |  | Jul. 22, 2015 | Dec. 02, 2014 |  |  |  |  |  |
Northwest Products System |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | 9 |  |  |
Effective date of acquisition |  |  |  | Jun. 19, 2013 |  |  |  |  |
UBFS |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Ownership interest |  |  |  |  | 38.00% |  |  |  |
Regulated common carrier refined products pipeline system |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Pollution liability insurance deductible |  |  |  |  | $ 5 |  |  |  |
TRG |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Equity method investment |  |  |  |  | 1 |  |  |  |
Ownership interest |  |  |  |  | 50.00% |  |  |  |
Vermillion Gathering System |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | system |  |  |  |  | 1 |  |  |  |
Uinta Basin Field Services [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Equity method investment |  |  |  |  | 1 |  |  |  |
Gathering | Rockies Natural Gas Business Acquisition |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 22 |  |  |  |
Processing | Rockies Natural Gas Business Acquisition |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 99 |  |  |  |
Refined products |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Percent retained for volume losses |  |  |  |  | 0.25% |  |  |  |
Refined products | Northwest Products System |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Percent retained for volume losses |  |  |  |  | 0.25% |  |  |  |
Distillates | Northwest Products System |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Percent retained for volume losses |  |  |  |  | 0.125% |  |  |  |
Crude oil |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Percent retained for volume losses |  |  |  |  | 0.20% |  |  |  |
Crude Oil And Refined Products Terminals And Storage Facilities |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | terminals |  |  |  |  | 25 |  |  |  | 1
Gas Processing Complexes | Processing |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | facility |  |  |  |  | 4 |  |  |  |
Fractionation Facility |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | facility |  |  | 1 |  |  |  |  |  |
Fractionation Facility | Processing |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Number of assets | facility |  |  |  |  | 1 |  |  |  |
New accounting standard, early adoption |  |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |  |  |  |  |
Unamortized debt issuance costs |  |  |  |  | $ 43 | $ 49 |  |  |
[1] | The Company adopted ASU 2015-03 in the first quarter of 2015 and applied changes retrospectively to the prior period presented. See Note 1 for further discussion.
[2] | Adjusted to include the historical results of the Predecessors. See Notes 1 and 2 for further discussion.
[3] | Adjusted to include the historical results of the Predecessors. See Notes 1 and 2 for further discussion.

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Definition The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611443-123010 + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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