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Investments In and Advances To Affiliates - Summary of Financial Information of Affiliates & Subsidiaries (Details) - USD ($)							3 Months Ended			12 Months Ended
		Sep. 24, 2015	Oct. 13, 2014	Jul. 02, 2014	Jul. 01, 2014	Apr. 11, 2014	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investments in and Advances to Affiliates [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax							$ (3,883,000,000)	$ (3,286,000,000)		$ (3,883,000,000)	$ (3,286,000,000)
Investments in and advances to affiliates							$ 610,000,000	537,000,000		610,000,000	537,000,000	$ 1,010,000,000
Gain (Loss) on Disposition of Business										29,000,000	358,000,000	26,000,000
Payments to Acquire Businesses and Interest in Affiliates										17,000,000	728,000,000	7,000,000
Proceeds from the sale of businesses, net of cash sold										138,000,000	1,807,000,000	170,000,000
Net equity in earnings of affiliates										$ 105,000,000	19,000,000	25,000,000
Global Infrastructure Partners
Investments in and Advances to Affiliates [Line Items]
Proceeds from the sale of businesses, net of cash sold						$ 730,000,000
Entek
Investments in and Advances to Affiliates [Line Items]
Pre-tax loss of disposed businesses, Excluding gain on disposal, included in continuing operations											9,000,000	29,000,000
TURKEY
Investments in and Advances to Affiliates [Line Items]
Investment In Affiliate Ownership Percentage Sold							100.00%			100.00%
Silver Ridge Power
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage				50.00%
Equity Method Investment, Purchase Price Agreement				$ 179,000,000
Equity Method Investment, Other than Temporary Impairment											42,000,000
Equity Method Investment, Net Sales Proceeds				179,000,000
Silver Ridge - Italy
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage							50.00%			50.00%
Equity Method Investment, Purchase Price Agreement					$ 42,000,000
Silver Ridge- Italy and Spain
Investments in and Advances to Affiliates [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax				40,000,000
Investments in and advances to affiliates				$ 32,000,000			$ 0	$ 64,000,000		$ 0	$ 64,000,000
Barry
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage	[1]						100.00%	100.00%		100.00%	100.00%
Investments in and advances to affiliates	[1]						$ 0	$ 0		$ 0	$ 0
Long Term Liabilities Associated With Debt Agreement Resulting In Loss Of Control							$ 49,000,000	$ 52,000,000		$ 49,000,000	$ 52,000,000
Elsta
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage	[1]						50.00%	50.00%		50.00%	50.00%
Investments in and advances to affiliates	[1]						$ 53,000,000	$ 54,000,000		$ 53,000,000	$ 54,000,000
Impaired Long-Lived Assets Held and Used, Facts and Circumstances Leading to Impairment											82,000,000
Equity Method Investment, Other than Temporary Impairment												$ 129,000,000
Net equity in earnings of affiliates								$ (41,000,000)		(41,000,000)
Entek
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage			49.62%
Equity Method Investment, Purchase Price Agreement			$ 125,000,000								125,000,000
Gain (Loss) on Disposition of Business							$ (4,000,000)
Equity Method Investment, Other than Temporary Impairment			$ 68,000,000						$ 18,000,000		$ 86,000,000
Investment In Affiliate Ownership Percentage Sold								49.62%			49.62%
guacolda [Member]
Investments in and Advances to Affiliates [Line Items]
Payments to Acquire Businesses and Interest in Affiliates						$ 728,000,000
guacolda [Member]
Investments in and Advances to Affiliates [Line Items]
Net equity in earnings of affiliates										66,000,000
Solar Spain [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Net Sales Proceeds		$ 31,000,000
Equity Method Investment, Realized Gain (Loss) on Disposal		$ 1,000,000
Parent [Member] | guacolda [Member]
Investments in and Advances to Affiliates [Line Items]
Net equity in earnings of affiliates										$ 46,000,000
[1] (1) Represent VIEs in which the Company holds a variable interest but is not the primary beneficiary.

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Equity Method Investment, Purchase Price Agreement

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Impairment of Long-Lived Assets Recognized, Equity Affiliate Level

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The effective percentage of the affiliate's voting interest owned by the reporting entity (directly or indirectly)

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The amount of long-term liabilities associated with a debt agreement under which no material financial of operating decisions can be made with the banks' consent, resulting in loss of control of the affiliate by the parent

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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This item represents the amount of net sales proceeds received on disposal of an equity method investment.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of gain (loss) on sale or disposal of an equity method investment.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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The cash outflow associated with the acquisition of a controlling interest in another entity or an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment).

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