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Debt Obligations Debt Obligations (Schedule Of Debt Obligations) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Jun. 30, 2018	Jan. 31, 2018	Dec. 31, 2017	Aug. 01, 2016
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net	$ 227
Other Long-term Debt	7			$ 8
Long-term Debt	46,028			44,084
Current maturities of long-term debt	2,655			413
Long-term debt, less current maturities	43,373			43,671
Parent Company [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net	10			11
Deferred Finance Costs, Noncurrent, Net	(27)			(34)
Long-term Debt	5,520			6,700
Long-term debt, less current maturities	5,519			6,700
Parent Company [Member] \| ETE 7.5% Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Senior Notes	1,187			1,187
Parent Company [Member] \| 5.875% Senior Notes due January 15, 2024 [Member]
Debt Instrument [Line Items]
Senior Notes	1,150			1,150
Parent Company [Member] \| 5.5% Senior Notes due June 1, 2027 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000			1,000
Parent Company [Member] \| 4.25% Senior Notes due March 15, 2023 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000			1,000
Parent Company [Member] \| ETE Senior Secured Term Loan due February 2, 2024 [Member]
Debt Instrument [Line Items]
Secured Debt	1,220			1,220
Parent Company [Member] \| ETE Senior Secured Revolving Credit Facility due March 24, 2022 [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	0			1,188
ETO [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net	17			33
Deferred Finance Costs, Noncurrent, Net	(178)			(170)
Long-term Debt	32,288			29,210
ETO [Member] \| 7.60% Senior Notes, due February 1, 2024 [Member]
Debt Instrument [Line Items]
Senior Notes	277			277
ETO [Member] \| 4.05% Senior Notes due March 2025 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000			1,000
ETO [Member] \| 4.75% Senior Notes due January 2026 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000			1,000
ETO [Member] \| 8.25% Senior Notes, due November 14, 2029 [Member]
Debt Instrument [Line Items]
Senior Notes	267			267
ETO [Member] \| 4.90% Senior Notes due March 2035 [Member]
Debt Instrument [Line Items]
Senior Notes	500			500
ETO [Member] \| 6.625% Senior Notes, due October 15, 2036 [Member]
Debt Instrument [Line Items]
Senior Notes	400			400
ETO [Member] \| 5.80% Senior Notes due 2038 [Member]
Debt Instrument [Line Items]
Senior Notes	500	$ 500		0
ETO [Member] \| 7.5% Senior Notes, due July 1, 2038 [Member]
Debt Instrument [Line Items]
Senior Notes	550			550
ETO [Member] \| Senior Notes 6.05% Due June 1, 2041 [Member]
Debt Instrument [Line Items]
Senior Notes	700			700
ETO [Member] \| Senior Notes 6.50% Due February 1, 2042 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000			1,000
ETO [Member] \| 5.15% Senior Notes due February 1, 2043 [Member]
Debt Instrument [Line Items]
Senior Notes	450			450
ETO [Member] \| 5.95% Senior Notes due October 1, 2043 [Member]
Debt Instrument [Line Items]
Senior Notes	450			450
ETO [Member] \| 5.15% Senior Notes due March 2045 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000			1,000
ETO [Member] \| 6.125% Senior Notes due December 2045 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000			1,000
ETO [Member] \| 5.30% Senior Notes due April 2047 [Member]
Debt Instrument [Line Items]
Senior Notes	900			900
ETO [Member] \| 5.40% Senior Notes due October 1, 2047 [Member]
Debt Instrument [Line Items]
Senior Notes	1,500			1,500
ETO [Member] \| 6.0% Senior Notes due 2048 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000	1,000		0
ETO [Member] \| 7.2% Junior Subordinated Notes due November 21, 2066 [Member]
Debt Instrument [Line Items]
Junior Subordinated Notes	546			546
ETO [Member] \| ETO Credit Facility due December 2022 [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	3,694			2,292
ETO [Member] \| 9.00% Debentures, due 2024 [Member]
Debt Instrument [Line Items]
Subordinated Debt	65			65
ETO [Member] \| 5.50% Senior Notes, due February 15, 2020 [Member]
Debt Instrument [Line Items]
Senior Notes	250			250
ETO [Member] \| Senior Note 4.65% Due February 15, 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	300			300
ETO [Member] \| 3.45% Senior Notes due January 2023 [Member]
Debt Instrument [Line Items]
Senior Notes	350			350
ETO [Member] \| 6.85% Senior Notes, due February 15, 2040 [Member]
Debt Instrument [Line Items]
Senior Notes	250			250
ETO [Member] \| 4.25% Senior Notes due April 1, 2024 [Member]
Debt Instrument [Line Items]
Senior Notes	500			500
ETO [Member] \| 5.95% Senior Notes due December 2025 [Member]
Debt Instrument [Line Items]
Senior Notes	400			400
ETO [Member] \| 3.90% Senior Notes due July 15, 2026 [Member]
Debt Instrument [Line Items]
Senior Notes	550			550
ETO [Member] \| 4.20% Senior Notes due April 2027 [Member]
Debt Instrument [Line Items]
Senior Notes	600			600
ETO [Member] \| 4.00% Senior Notes due October 1, 2027 [Member]
Debt Instrument [Line Items]
Senior Notes	750			750
ETO [Member] \| 4.95% Senior Notes due 2028 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000	1,000		0
ETO [Member] \| Senior Note 6.10%, due February 15, 2042 [Member]
Debt Instrument [Line Items]
Senior Notes	300			300
ETO [Member] \| 5.30% Senior Notes due April 1, 2044 [Member]
Debt Instrument [Line Items]
Senior Notes	700			700
ETO [Member] \| 5.35% Senior Notes due May 15, 2045 [Member]
Debt Instrument [Line Items]
Senior Notes	800			800
ETO [Member] \| 4.95% Senior Notes due January 2043 [Member]
Debt Instrument [Line Items]
Senior Notes	350			350
ETO [Member] \| 2.50% Senior Notes due June 2018 [Member]
Debt Instrument [Line Items]
Senior Notes	0	650		650
ETO [Member] \| 6.7% Senior Notes, due July 1, 2018 [Member]
Debt Instrument [Line Items]
Senior Notes	0	600		600
ETO [Member] \| 9.7% Senior Notes, due March 15, 2019 [Member]
Debt Instrument [Line Items]
Senior Notes	400			400
ETO [Member] \| 9.0% Senior Notes due April 15, 2019 [Member]
Debt Instrument [Line Items]
Senior Notes	450			450
ETO [Member] \| 5.75% Senior Notes due September 1, 2020 [Member]
Debt Instrument [Line Items]
Senior Notes	400			400
ETO [Member] \| 4.15% Senior Notes due October 1, 2020 [Member]
Debt Instrument [Line Items]
Senior Notes	1,050			1,050
ETO [Member] \| 5.875% Senior Notes due April 1, 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	900			900
ETO [Member] \| 4.5% Senior Notes due November 1, 2023 [Member]
Debt Instrument [Line Items]
Senior Notes	600			600
ETO [Member] \| 4.9% Senior Notes due February 1, 2024 [Member]
Debt Instrument [Line Items]
Senior Notes	350			350
ETO [Member] \| Senior Notes 4.65% Due June 1, 2021 [Member]
Debt Instrument [Line Items]
Senior Notes	800			800
ETO [Member] \| Senior Notes 5.20% Due February 1, 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	1,000			1,000
ETO [Member] \| 5.0% Senior Notes due October 1, 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	700			700
ETO [Member] \| 3.6% Senior Notes due February 1, 2023 [Member]
Debt Instrument [Line Items]
Senior Notes	800			800
ETO [Member] \| 4.20% Senior Notes due 2023 [Member]
Debt Instrument [Line Items]
Senior Notes	500	500		0
ETO [Member] \| ETO 364-day Credit Facility due November 2019 [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	0			50
Bakken Project [Member]
Debt Instrument [Line Items]
Deferred Finance Costs, Noncurrent, Net	(3)			(8)
Long-term Debt	2,497			2,492
Bakken Project [Member] \| Bakken Project $2.50 billion Credit Facility due August 2019 [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	2,500			2,500	$ 2,500
Sunoco LP [Member]
Debt Instrument [Line Items]
Capital Lease Obligations	107			113
Deferred Finance Costs, Noncurrent, Net	(23)			(34)
Long-term Debt	2,984			4,287
Sunoco LP [Member] \| 5.5% Senior Notes due August 2020 [Member]
Debt Instrument [Line Items]
Senior Notes	0		$ 600	600
Sunoco LP [Member] \| 6.375% Senior Notes due April 2023 [Member]
Debt Instrument [Line Items]
Senior Notes	0		800	800
Sunoco LP [Member] \| 6.25% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Senior Notes	0		$ 800	800
Sunoco LP [Member] \| Sunoco LP $1.5 billion Revolving Credit Facility due July 2023 [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	700			0
Sunoco LP [Member] \| Sunoco LP $1.5 Billion Revolving Credit Facility Due September 2019 [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	0			765
Sunoco LP [Member] \| Term loan due 2019 [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	0			1,243
Transwestern [Member]
Debt Instrument [Line Items]
Deferred Finance Costs, Noncurrent, Net	1			1
Long-term Debt	574			574
Transwestern [Member] \| 5.36% Senior Unsecured Notes, due December 9, 2020 [Member]
Debt Instrument [Line Items]
Senior Notes	175			175
Transwestern [Member] \| 5.89% Senior Unsecured Notes, due May 24, 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	150			150
Transwestern [Member] \| 5.66% Senior Unsecured Notes, due December 9, 2024 [Member]
Debt Instrument [Line Items]
Senior Notes	175			175
Transwestern [Member] \| 6.16% Senior Unsecured Notes, due May 24, 2037 [Member]
Debt Instrument [Line Items]
Senior Notes	75			75
Panhandle [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net	14			28
Long-term Debt	399			813
Panhandle [Member] \| 7.60% Senior Notes, due February 1, 2024 [Member]
Debt Instrument [Line Items]
Senior Notes	82			82
Panhandle [Member] \| 8.25% Senior Notes, due November 14, 2029 [Member]
Debt Instrument [Line Items]
Senior Notes	33			33
Panhandle [Member] \| 7.2% Junior Subordinated Notes due November 21, 2066 [Member]
Debt Instrument [Line Items]
Junior Subordinated Notes	54			54
Panhandle [Member] \| 7.00% Senior Notes, due June 15, 2018 [Member]
Debt Instrument [Line Items]
Senior Notes	0	$ 400		400
Panhandle [Member] \| 8.125% Senior Notes, due June 1, 2019 [Member]
Debt Instrument [Line Items]
Senior Notes	150			150
Panhandle [Member] \| 7.00% Senior Notes, due July 15, 2029 [Member]
Debt Instrument [Line Items]
Senior Notes	66			66
USA Compression Partners, LP [Member]
Debt Instrument [Line Items]
Senior Notes	725			0
Long-term Line of Credit	1,050			0
Deferred Finance Costs, Noncurrent, Net	(16)			0
Long-term Debt	$ 1,759			$ 0