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Investments In and Advances To Affiliates - Summary of Financial Information of Affiliates & Subsidiaries (Details) - USD ($)
$ in Millions
12 Months Ended
Nov. 15, 2017
Jul. 25, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Investments in and Advances to Affiliates [Line Items]          
Accumulated Other Comprehensive Income (Loss), Net of Tax     $ (1,876) $ (2,756) $ (3,883)
Investments in and advances to affiliates     1,197 621 610
Gain (Loss) on Disposition of Business     (52) 29 29
Payments to Acquire Businesses and Interest in Affiliates     625 55 17
Proceeds from the sale of businesses, net of cash sold, and equity method investments     108 631 138
Net equity in earnings of affiliates     $ 71 $ 36 105
Barry          
Investments in and Advances to Affiliates [Line Items]          
Equity Method Investment, Ownership Percentage [1]     100.00% 100.00%  
Investments in and advances to affiliates [1]     $ 0 $ 0  
Long Term Liabilities Associated With Debt Agreement Resulting In Loss Of Control     $ 45 $ 41  
Elsta          
Investments in and Advances to Affiliates [Line Items]          
Equity Method Investment, Ownership Percentage [1]     50.00% 50.00%  
Investments in and advances to affiliates [1]     $ 38 $ 41  
sPower [Member]          
Investments in and Advances to Affiliates [Line Items]          
Equity Method Investment, Ownership Percentage 2.00% 48.00%      
Payments to Acquire Businesses, Net of Cash Acquired $ 19 $ 461      
guacolda [Member]          
Investments in and Advances to Affiliates [Line Items]          
Net equity in earnings of affiliates         66
Parent [Member] | guacolda [Member]          
Investments in and Advances to Affiliates [Line Items]          
Net equity in earnings of affiliates         $ 46
[1] Represent VIEs in which the Company holds a variable interest, but is not the primary beneficiary.