UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	[3]	Jun. 30, 2016	[5]
Cash flows from operating activities
Net income	$ 143.7	[1],[2]	$ 142.7	[4]
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, amortization and accretion	19.1	[2]	18.0	[4]
Non-cash interest expense	0.1		0.1
Allowance oil reduction to net realizable value	0.3		0.0
Undistributed equity earnings	(1.5)		1.0
Changes in operating assets and liabilities
Accounts receivable	(14.2)		2.9
Allowance oil	0.7		0.4
Prepaid expenses	1.8		4.5
Accounts payable	5.2		(4.5)
Deferred revenue	10.4		(1.7)
Accrued liabilities	9.7		4.1
Net cash provided by operating activities	175.3		167.5
Cash flows from investing activities
Capital expenditures	(20.9)		(19.7)
Acquisitions	(210.6)		(93.7)
Purchase price adjustment	0.4		0.0
Return of investment	8.4		8.0
April 2017 Divestiture	0.8		0.0
Net cash used in investing activities	(221.9)		(105.4)
Cash flows from financing activities
Net proceeds from public offerings	2.9		818.1
Borrowing under credit facility	580.0		296.7
Contributions from general partner	0.1		9.8
Repayment of credit facilities	0.0		(410.0)
Capital distributions to general partner	(419.4)		(599.2)
Distributions to noncontrolling interest	(6.6)		(14.4)
Distributions to unitholders and general partner	(122.2)		(77.0)
Net distributions to Parent	(6.3)		(10.9)
Other contributions from Parent	12.4		0.4
Proceeds from April 2017 Divestiture	20.2		0.0
Capital lease payments	(0.3)		0.0
Credit facility issuance costs	(0.7)		0.0
Net cash provided by financing activities	60.1		13.5
Net increase in cash and cash equivalents	13.5		75.6
Cash and cash equivalents at beginning of the period	121.9	[6]	93.0
Cash and cash equivalents at end of the period	135.4		168.6
Non-cash investing and financing transactions
Change in accrued capital expenditures	2.7		(4.4)
Other non-cash contributions from Parent	1.1		0.1
Other non-cash capital distributions to general partner	0.0		(7.1)
Other non-cash contribution from general partner	0.0		7.1
Distribution of working capital to Parent	$ (2.8)		$ 0.0

[1] Prior period financial information has been retrospectively adjusted for the acquisition of the Shell Delta, Na Kika and Refinery Gas Pipeline Operations.

[2] The 2017 financial information reflects adjustments for the acquisition of the Shell Delta, Na Kika and Refinery Gas Pipeline Operations from January 1, 2017 through May 9, 2017.

[3] The 2017 financial information reflects adjustments for the acquisition of the Shell Delta, Na Kika and Refinery Gas Pipeline Operations from January 1, 2017 through May 9, 2017.

[4] Prior period financial information has been retrospectively adjusted for the acquisition of the Shell Delta, Na Kika and Refinery Gas Pipeline Operations.

[5] Prior period financial information has been retrospectively adjusted for the acquisition of the Shell Delta, Na Kika and Refinery Gas Pipeline Operations.

[6] Prior period financial information has been retrospectively adjusted for the acquisition of the Shell Delta, Na Kika and Refinery Gas Pipeline Operations.