Partners' Capital (Tables)

3 Months Ended

Mar. 31, 2018

Partners' Capital

Schedule of cash distributions paid or declared

The following table details the cash distribution paid or declared (in millions, except per unit amounts):

								Total
								Payment to
								General
								Partner for
								Incentive
	Declaration	Record	Payment	Distribution		Total Cash		Distribution
Quarter Ended	Date	Date	Date	Per Unit		Distribution		Rights
March 31, 2017	May 3, 2017	May 18, 2017	May 30, 2017	$	0.5550	$	14.6	$	0.5
June 30, 2017	August 2, 2017	August 15, 2017	August 29, 2017	$	0.5700	$	15.0	$	0.7
September 30, 2017	November 2, 2017	November 15, 2017	November 29, 2017	$	0.6150	$	16.2	$	1.1
December 31, 2017	January 31, 2018	February 15, 2018	February 28, 2018	$	0.6200	$	16.3	$	1.1
March 31, 2018	May 3, 2018	May 15, 2018	May 29, 2018	$	0.6250	$	16.5	$	1.3

Schedule of changes in accumulated other comprehensive income

The following table presents the changes in accumulated other comprehensive loss for the three months ended March 31, 2018:

	Unrealized
	Losses on
	Derivative
	Instruments
Balance at December 31, 2017	$	(3,040)
Net unrealized losses		(1,328)
Reclassification of net losses realized into net loss		1
Accumulated other comprehensive loss at March 31, 2018	$	(4,367)

The following table presents the changes in accumulated other comprehensive (loss) income for the three months ended March 31, 2017:

	Unrealized
	Losses on
	Derivative
	Instruments
Balance at December 31, 2016	$	595
Net unrealized losses		(740)
Reclassification of net losses realized into net loss		(57)
Accumulated other comprehensive loss at March 31, 2017	$	(202)