Selected Quarterly Financial Data (unaudited) (Notes)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Text Block]

Selected Quarterly Financial Data (unaudited)

The following table sets forth certain unaudited financial and operating data for each quarter during 2019 and 2018. The unaudited quarterly information includes all normal recurring adjustments that we consider necessary for a fair presentation of the information shown.

	2019								2018
	4th QTR		3rd QTR		2nd QTR		1st QTR		4th QTR			3rd QTR			2nd QTR			1st QTR
	(in millions, except per unit amounts)
Total revenues	$	4,098	$	4,331	$	4,475	$	3,692	$	3,877		$	4,761		$	4,607		$	3,749
Operating income (loss)	$	98	$	117	$	97	$	152	$	(38	)	$	159		$	128		$	96
Net Income (loss)	$	83	$	66	$	55	$	109	$	(72	)	$	112		$	68		$	(315	)
Income (loss) from continuing operations per limited partner unit:
Common - basic	$	0.76	$	0.57	$	0.44	$	1.08	$	(1.11	)	$	1.16		$	0.91		$	(1.11	)
Common - diluted	$	0.75	$	0.57	$	0.43	$	1.07	$	(1.11	)	$	1.15		$	0.90		$	(1.11	)
Income (loss) from discontinued operations per limited partner unit:
Common - basic	$	—	$	—	$	—	$	—	$	—		$	(0.03	)	$	(0.32	)	$	(2.63	)
Common - diluted	$	—	$	—	$	—	$	—	$	—		$	(0.03	)	$	(0.32	)	$	(2.63	)