Note 10 - Commitments, Guarantees and Contingencies (Tables)

6 Months Ended

Jun. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]

													2020 &
In millions	Total		2015		2016		2017		2018		2019		thereafter
Recorded contractual obligations:
Long-term debt	$	3,506	$	-	$	545	$	22	$	155	$	350	$	2,434
Short-term debt		459		459		-		-		-		-		-
Environmental remediation liabilities (1)		429		47		86		80		65		44		107
Total	$	4,394	$	506	$	631	$	102	$	220	$	394	$	2,541

Unrecorded contractual obligations and commitments (2) (7):
Pipeline charges, storage capacity and gas supply (3)	$	5,341	$	527	$	706	$	491	$	369	$	343	$	2,905
Interest charges (4)		2,670		87		171		147		146		141		1,978
Operating leases (5)		172		13		26		28		21		16		68
Asset management agreements (6)		33		5		11		9		6		2		-
Standby letters of credit, performance/surety bonds (7)		48		37		11		-		-		-		-
Other		8		3		3		1		1		-		-
Total	$	8,272	$	672	$	928	$	676	$	543	$	502	$	4,951