Partners' Capital (Series A Preferred Units) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Mar. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 30, 2022	Jan. 25, 2018
Preferred Units, Issued	12,000,000
Shares Issued, Price Per Share	$ 25.00
Distribution rate	10.00%
Preferred Stock, Liquidation Preference Per Share	$ 25.00
Distributions Per Partnership Unit	$ 2.50
Proceeds from issuance of common units, net of offering costs		$ 0	$ 0	$ 33
Series A Preferred Unit, Redemption Amount						$ 313
Forecast [Member]
Distribution rate					8.00%
Series A Preferred Units | Forecast [Member]
Redemption price					101.00%
ETE [Member]
Proceeds from issuance of common units, net of offering costs	$ 300