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Storage Tank Capacity, Additional Capacity Over Initial Design

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Storage Tank Capacity, Initial Capacity Of Design

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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ACQUISITIONS, INVESTMENTS AND DISPOSITION - South Texas Transactions (Details) $ in Thousands, bbl in Millions	1 Months Ended	12 Months Ended
	Apr. 30, 2018 USD ($) bbl	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Capital expenditures incurred but not yet paid		$ 85,300	$ 62,600	$ 59,100
Acquisition of and contribution to equity investments		$ 42,204	$ 1,387,844	$ 0
Buckeye Texas
Business Acquisition [Line Items]
Percentage of equity investment ownership acquired	20.00%
Consideration for business acquisition	$ 210,000
Buckeye Texas
Business Acquisition [Line Items]
Ownership percentage	100.00%	100.00%
Joint Venture
Business Acquisition [Line Items]
Ownership percentage	50.00%
Additional capacity over initial design (in barrels) \| bbl	6.8
Initial capacity of design (in barrels) \| bbl	3.4
Construction cost basis	100.00%
Capital expenditures incurred but not yet paid	$ 480,900
Joint Venture, Buckeye Partners 50% Interest
Business Acquisition [Line Items]
Capital expenditures incurred but not yet paid	$ 240,500
Phillips 66 Partners LP \| Joint Venture
Business Acquisition [Line Items]
Ownership percentage	25.00%