Discontinued Operations and Held for sale businesses (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash Provided by (Used in) Operating Activities, Discontinued Operations				$ 68	$ (23)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax		$ 0	$ 0	(382)	0
Discontinued Operation, Tax (Expense) Benefit from Provision for (Gain) Loss on Disposal				266
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		0		0			$ 882
Expected future loss on disposal		700
Expected Cumulative impact of sale		1,100
Expected amounts of CTA to be reclassed as a result of sale		1,000		1,000
Expected reduction in Stockholders equity as a result of sale		100		100
Discontinued Operation, Tax Effect of Discontinued Operation		0	1	(4)	(6)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		(1)	5	(389)	(12)
Cash Provided by (Used in) Investing Activities, Discontinued Operations				(63)	(16)
Sul Subsidiary [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents		4		4			5
Disposal Group, Including Discontinued Operation, Revenue		213	199	632	627
Disposal Group, Including Discontinued Operation, Costs of Goods Sold		(200)	(192)	(608)	(620)
Impairment Expense Pre Tax Total		0	0	(783)	0
Disposal Group, Including Discontinued Operation, Other Expense		(14)	(1)	(35)	(25)
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		1,600		1,600
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		(1)	6	(794)	(18)
Discontinued Operation, Tax Effect of Discontinued Operation		0	(1)	405	6
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		(1)	$ 5	(389)	$ (12)
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net		184		184			171
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment		860		860			668
Disposal Group, Including Discontinued Operation, Deferred Tax Assets		589		589			133
Disposal Group, Including Discontinued Operation, Other Assets		206		206			233
Disposal group, loss recognized on classification as held for sale	[1]	(837)		(837)			0
Disposal Group, Including Discontinued Operation, Assets	[2]	1,006		1,006			1,306
Disposal Group, Including Discontinued Operation, Accounts Payable		141		141			150
Disposal Group, Including Discontinued Operation, Accrued Liabilities		156		156			150
Non Recourse Debt Held For Sale Or Discontinued Operations		337		337			346
Disposal Group, Including Discontinued Operation, Other Liabilities		168		168			125
Disposal Group, Including Discontinued Operation, Liabilities	[2]	802		802			784
Sul Subsidiary [Member] | Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Assets		1,006		1,006			1,210
Disposal Group, Including Discontinued Operation, Liabilities		802		802			771
Sul Subsidiary [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Assets	[3]	0		0			96
Disposal Group, Including Discontinued Operation, Liabilities	[3]	$ 0		0			$ 13
Sul Subsidiary [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Tax (Expense) Benefit from Provision for (Gain) Loss on Disposal				$ 135
Discontinued operations and held for sale businesses [Member] | Sul Subsidiary [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair Value, Nonrecurring	[4]					$ 470

[1] (3) Amounts were classified as both current and long-term on the Condensed Consolidated Balance Sheet as of December 31, 2015.

[2] (1) Pre-tax impairment expense of $783 million is net of the impact from cumulative translation adjustments.

[3] (2) DPLER and Kelanitissa were classified as held-for-sale as of December 31, 2015. See Note 17—Dispositions for further information.

[4] (3) Per the Company’s policy, pre-tax loss is limited to the impairment of long-lived assets. Any additional loss will be recognized on completion of the sale. See Note 16—Discontinued Operations for further information.