Note 11 - Segment Information (Details) - Intersegment Reporting (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 889	[1]	$ 805	[1]	$ 3,351	[1]	$ 2,417	[1]
Operating expenses
Cost of goods sold	402	[1]	353	[1]	1,802	[1]	1,273	[1]
Operation and maintenance	211	[1]	204	[1]	500	[1]	435	[1]
Depreciation and amortization	95	[1]	103	[1]	188	[1]	205	[1]
Taxes other than income taxes	42	[1]	43	[1]	130	[1]	112	[1]
Total operating expenses	750	[1]	703	[1]	2,620	[1]	2,025	[1]
Gain on disposition of assets			11	[1]			11	[1]
Operating income (loss)	139	[1]	113	[1]	731	[1]	403	[1]
Other income	2	[1]	6	[1]	5	[1]	11	[1]
EBIT	141	[1]	119	[1]	736	[1]	414	[1]
Identifiable and total assets	14,181	[1]	13,708	[1]	14,181	[1]	13,708	[1]	14,550	[1]
Capital expenditures	171	[1]	168	[1]	332	[1]	315	[1]
Intersegment Eliminations [Member] | Distribution Operations [Member]
Segment Reporting Information [Line Items]
Revenues	43	[1]	43	[1]	118	[1]	98	[1]
Intersegment Eliminations [Member] | Retail Operations [Member]
Segment Reporting Information [Line Items]
Revenues	1	[1]		[1]	1	[1]		[1]
Intersegment Eliminations [Member] | Wholesale Services [Member]
Segment Reporting Information [Line Items]
Revenues		[1],[2]		[1],[2]		[1],[2]		[1],[2]
Intersegment Eliminations [Member] | Midstream Operations [Member]
Segment Reporting Information [Line Items]
Revenues		[1]		[1]		[1]		[1]
Intersegment Eliminations [Member] | Other Segments [Member]
Segment Reporting Information [Line Items]
Revenues		[1],[3]		[1],[3]		[1],[3]		[1],[3]
Intersegment Eliminations [Member] | Intercompany Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(44)	[1],[3]	(43)	[1],[3]	(119)	[1],[3]	(98)	[1],[3]
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues		[1]		[1]		[1]		[1]
Operating expenses
Identifiable and total assets									(10,088)	[1],[4]
Operating Segments [Member] | Distribution Operations [Member]
Segment Reporting Information [Line Items]
Revenues	699	[1]	645	[1]	2,500	[1]	1,955	[1]
Operating Segments [Member] | Retail Operations [Member]
Segment Reporting Information [Line Items]
Revenues	177	[1]	165	[1]	583	[1]	467	[1]
Operating Segments [Member] | Wholesale Services [Member]
Segment Reporting Information [Line Items]
Revenues	47	[1],[2]	21	[1],[2]	378	[1],[2]	60	[1],[2]
Operating Segments [Member] | Midstream Operations [Member]
Segment Reporting Information [Line Items]
Revenues	17	[1]	15	[1]	61	[1]	39	[1]
Operating Segments [Member] | Other Segments [Member]
Segment Reporting Information [Line Items]
Revenues	1	[1],[3]	3	[1],[3]	4	[1],[3]	4	[1],[3]
Operating Segments [Member] | Intercompany Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(52)	[1],[3]	(44)	[1],[3]	(175)	[1],[3]	(108)	[1],[3]
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	889	[1]	805	[1]	3,351	[1]	2,417	[1]
Distribution Operations [Member] | Continuing Operations [Member]
Operating expenses
Identifiable and total assets	11,515	[1],[2],[5]	11,088	[1],[2],[5]	11,515	[1],[2],[5]	11,088	[1],[2],[5]
Distribution Operations [Member]
Segment Reporting Information [Line Items]
Revenues	656	[1]	602	[1]	2,382	[1]	1,857	[1]
Operating expenses
Cost of goods sold	315	[1]	266	[1]	1,517	[1]	1,031	[1]
Operation and maintenance	159	[1]	158	[1]	370	[1]	343	[1]
Depreciation and amortization	78	[1]	88	[1]	156	[1]	176	[1]
Taxes other than income taxes	40	[1]	38	[1]	122	[1]	102	[1]
Total operating expenses	592	[1]	550	[1]	2,165	[1]	1,652	[1]
Gain on disposition of assets				[1]				[1]
Operating income (loss)	107	[1]	95	[1]	335	[1]	303	[1]
Other income	3	[1]	4	[1]	4	[1]	7	[1]
EBIT	110	[1]	99	[1]	339	[1]	310	[1]
Identifiable and total assets									11,634	[1],[4]
Capital expenditures	158	[1]	158	[1]	308	[1]	295	[1]
Retail Operations [Member] | Continuing Operations [Member]
Operating expenses
Identifiable and total assets	671	[1],[2],[5]	634	[1],[2],[5]	671	[1],[2],[5]	634	[1],[2],[5]
Retail Operations [Member]
Segment Reporting Information [Line Items]
Revenues	176	[1]	165	[1]	582	[1]	467	[1]
Operating expenses
Cost of goods sold	119	[1]	115	[1]	399	[1]	310	[1]
Operation and maintenance	34	[1]	32	[1]	71	[1]	63	[1]
Depreciation and amortization	6	[1]	6	[1]	14	[1]	12	[1]
Taxes other than income taxes	1	[1]	1	[1]	2	[1]	2	[1]
Total operating expenses	160	[1]	154	[1]	486	[1]	387	[1]
Gain on disposition of assets				[1]				[1]
Operating income (loss)	17	[1]	11	[1]	97	[1]	80	[1]
Other income		[1]		[1]		[1]		[1]
EBIT	17	[1]	11	[1]	97	[1]	80	[1]
Identifiable and total assets									685	[1],[4]
Capital expenditures	3	[1]	3	[1]	6	[1]	4	[1]
Wholesale Services [Member] | Continuing Operations [Member]
Operating expenses
Identifiable and total assets	1,207	[1],[2],[5]	1,008	[1],[2],[5]	1,207	[1],[2],[5]	1,008	[1],[2],[5]
Wholesale Services [Member]
Segment Reporting Information [Line Items]
Revenues	47	[1],[2]	21	[1],[2]	378	[1],[2]	60	[1],[2]
Operating expenses
Cost of goods sold	7	[1],[2]	10	[1],[2]	10	[1],[2]	20	[1],[2]
Operation and maintenance	13	[1],[2]	10	[1],[2]	49	[1],[2]	23	[1],[2]
Depreciation and amortization	1	[1],[2]	1	[1],[2]	1	[1],[2]	1	[1],[2]
Taxes other than income taxes		[1],[2]		[1],[2]	1	[1],[2]	1	[1],[2]
Total operating expenses	21	[1],[2]	21	[1],[2]	61	[1],[2]	45	[1],[2]
Gain on disposition of assets			11	[1],[2]			11	[1],[2]
Operating income (loss)	26	[1],[2]	11	[1],[2]	317	[1],[2]	26	[1],[2]
Other income	(2)	[1],[2]		[1],[2]	(2)	[1],[2]		[1],[2]
EBIT	24	[1],[2]	11	[1],[2]	315	[1],[2]	26	[1],[2]
Identifiable and total assets									1,163	[1],[4]
Capital expenditures		[1],[2]		[1],[2]	1	[1],[2]		[1],[2]
Midstream Operations [Member] | Continuing Operations [Member]
Operating expenses
Identifiable and total assets	699	[1],[2],[5]	715	[1],[2],[5]	699	[1],[2],[5]	715	[1],[2],[5]
Midstream Operations [Member]
Segment Reporting Information [Line Items]
Revenues	17	[1]	15	[1]	61	[1]	39	[1]
Operating expenses
Cost of goods sold	11	[1]	4	[1]	47	[1]	16	[1]
Operation and maintenance	7	[1]	6	[1]	13	[1]	12	[1]
Depreciation and amortization	4	[1]	4	[1]	9	[1]	8	[1]
Taxes other than income taxes	2	[1]	2	[1]	3	[1]	3	[1]
Total operating expenses	24	[1]	16	[1]	72	[1]	39	[1]
Gain on disposition of assets				[1]				[1]
Operating income (loss)	(7)	[1]	(1)	[1]	(11)	[1]		[1]
Other income		[1]	1	[1]	1	[1]	2	[1]
EBIT	(7)	[1]		[1]	(10)	[1]	2	[1]
Identifiable and total assets									713	[1],[4]
Capital expenditures	5	[1]	4	[1]	5	[1]	8	[1]
Other Segments [Member] | Continuing Operations [Member]
Operating expenses
Identifiable and total assets	9,499	[1],[2],[3],[5]	9,668	[1],[2],[3],[5]	9,499	[1],[2],[3],[5]	9,668	[1],[2],[3],[5]
Other Segments [Member]
Segment Reporting Information [Line Items]
Revenues	1	[1],[3]	3	[1],[3]	4	[1],[3]	4	[1],[3]
Operating expenses
Cost of goods sold		[1],[3]		[1],[3]		[1],[3]		[1],[3]
Operation and maintenance		[1],[3]		[1],[3]	1	[1],[3]	(2)	[1],[3]
Depreciation and amortization	6	[1],[3]	4	[1],[3]	8	[1],[3]	8	[1],[3]
Taxes other than income taxes	(1)	[1],[3]	2	[1],[3]	2	[1],[3]	4	[1],[3]
Total operating expenses	5	[1],[3]	6	[1],[3]	11	[1],[3]	10	[1],[3]
Gain on disposition of assets				[1],[3]				[1],[3]
Operating income (loss)	(4)	[1],[3]	(3)	[1],[3]	(7)	[1],[3]	(6)	[1],[3]
Other income	1	[1],[3]	1	[1],[3]	2	[1],[3]	2	[1],[3]
EBIT	(3)	[1],[3]	(2)	[1],[3]	(5)	[1],[3]	(4)	[1],[3]
Identifiable and total assets									10,160	[1],[4],[6]
Capital expenditures	5	[1],[3]	3	[1],[3]	12	[1],[3]	8	[1],[3]
Intercompany Eliminations [Member] | Continuing Operations [Member]
Operating expenses
Identifiable and total assets	(9,667)	[1],[2],[3],[5]	(9,694)	[1],[2],[3],[5]	(9,667)	[1],[2],[3],[5]	(9,694)	[1],[2],[3],[5]
Intercompany Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(8)	[1],[3]	(1)	[1],[3]	(56)	[1],[3]	(10)	[1],[3]
Operating expenses
Cost of goods sold	(50)	[1],[3]	(42)	[1],[3]	(171)	[1],[3]	(104)	[1],[3]
Operation and maintenance	(2)	[1],[3]	(2)	[1],[3]	(4)	[1],[3]	(4)	[1],[3]
Depreciation and amortization		[1],[3]		[1],[3]		[1],[3]		[1],[3]
Taxes other than income taxes		[1],[3]		[1],[3]		[1],[3]		[1],[3]
Total operating expenses	(52)	[1],[3]	(44)	[1],[3]	(175)	[1],[3]	(108)	[1],[3]
Gain on disposition of assets				[1],[3]				[1],[3]
Operating income (loss)		[1],[3]		[1],[3]		[1],[3]		[1],[3]
Other income		[1],[3]		[1],[3]		[1],[3]		[1],[3]
EBIT		[1],[3]		[1],[3]		[1],[3]		[1],[3]
Capital expenditures		[1],[3]		[1],[3]		[1],[3]		[1],[3]
Continuing Operations [Member]
Operating expenses
Identifiable and total assets	$ 13,924	[1],[5]	$ 13,419	[1],[5]	$ 13,924	[1],[5]	$ 13,419	[1],[5]	$ 14,267	[1],[4]

[1] Amounts revised to include prior period adjustments. See Note 13 for additional information.

[2] Wholesale services records its energy marketing and risk management revenues on a net basis. A reconciliation of our operating revenues and our intercompany revenues is shown in the following table.

[3] Our "other" segment now also includes our investment in Triton, which was part of our cargo shipping segment and has been classified as discontinued operations. For more information see Note 12.

[4] Identifiable assets are those assets used in each segment's operations and exclude assets held for sale.

[5] Identifiable assets are those used in each segment's operations and exclude assets held for sale

[6] Includes our investment in Triton that was previously part of the cargo shipping segment.