Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues (including revenues from affiliates (Note 13)):
Total Revenues	$ 648	$ 795
Cost and Expenses (including expenses from affiliates (Note 13)):
Cost of natural gas and natural gas liquids (excluding depreciation and amortization shown separately)	226	378
Operation and maintenance	102	103
General and administrative	24	26
Depreciation and amortization	104	105
Impairments (Note 7)	28	0
Impairment of Long-Lived Assets to be Disposed of		0
Taxes other than income tax	18	18
Total Cost and Expenses	502	630
Operating Income	146	165
Other Income (Expense):
Interest expense	(47)	(46)
Equity in earnings of equity method affiliate	6	3
Total Other Expense	(41)	(43)
Income Before Income Tax
Income Before Income Tax	105	122
Income tax benefit	0	(1)
Net Income
Net Income	105	123
Less: Net (loss) income attributable to noncontrolling interest
Less: Net (loss) income attributable to noncontrolling interest	(7)	1
Net Income Attributable to Limited Partners
Net Income Attributable to Limited Partners	112	122
Less: Series A Preferred Unit distributions (Note 6)
Less: Series A Preferred Unit distributions (Note 6)	9	9
Net Income Attributable to Common Units (Note 5)
Net Income Attributable to Common Units (Note 5)	103	113
Common Units
Net Income Attributable to Common Units (Note 5)
Net Income Attributable to Common Units (Note 5)	$ 103	$ 113
Basic and Diluted earnings (loss) per unit and weighted average number of units outstanding
Basic earnings per unit (Note 5)	$ 0.24	$ 0.26
Diluted earnings per unit (Note 5)	$ 0.19	$ 0.26
Product
Revenues (including revenues from affiliates (Note 13)):
Total Revenues	$ 288	$ 443
Natural Gas, Gathering, Transportation, Marketing and Processing
Revenues (including revenues from affiliates (Note 13)):
Total Revenues	$ 360	$ 352