Aggregate Amount Of Common Shares Available For Issuance And Sale Under Equity Distribution Agreement

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Calculated annualized per share amount for common stock dividends declared

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Common Stock Sold Under Equity Distribution Agreement

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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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Aggregate dividends paid during the period for each share of common stock outstanding.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Noncash charitable contributions made by the entity during the period.

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The percentage rate used to calculate dividend payments on preferred stock.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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Price of a single share of a number of saleable stocks of a company.

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Number of new stock issued during the period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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EQUITY EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended													12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
General partner ownership interest														100.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners								20.00%
Business Combination, Consideration Transferred							$ 195,000
Common Stock, Dividends, Per Share, Cash Paid		$ 0.915	$ 0.890	$ 0.865	$ 0.860	$ 0.855	$ 0.825	$ 0.795	$ 0.770	$ 0.745	$ 0.745	$ 0.615	$ 0.615	$ 3.53	$ 3.245	$ 2.72
Dividends, Cash														$ 1,500,000	$ 1,300,000	$ 829,400
Public Offering Price of Common Stock									$ 54.50
Stock Issued During Period, Shares, New Issues									21,900,000
Noncash Contribution Expense														0	0	12,600
Dividends, Preferred Stock, Cash														1,100	1,100	600
Preferred stock dividends paid														$ 1,100	$ 1,100	$ 767
Proceeds from Issuance or Sale of Equity									$ 1,200,000
Issued Under Equity Agreement
Common Stock Sold Under Equity Distribution Agreement														0	0
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared, Annualized	$ 3.74
Common Stock, Dividends, Per Share, Declared	$ 0.935
Preferred stock dividends paid	$ 300
Dividends Payable, Date to be Paid	Jan. 27, 2020
Issued Under Equity Agreement
Common Stock Sold Under Equity Distribution Agreement																8,400,000
Proceeds from Issuance or Sale of Equity																$ 448,300
Series A Preferred Stock [Member]
Preferred Stock, Shares Outstanding		0												0
Series B Preferred Stock [Member]
Preferred Stock, Shares Outstanding		0												0
Series E Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues												20,000
Stock Issued During Period, Value, New Issues												$ 20,000
Noncash Contribution Expense												$ 20,000				$ 20,000
Preferred Stock, Dividend Rate, Percentage														5.50%
ONEOK
Aggregate Amount Of Common Shares Available For Issuance And Sale Under Equity Distribution Agreement											$ 1,000,000