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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Accounts Receivable, Allowance for Credit Loss, Current $ 9 $ 13
Common stock, shares authorized (in shares) 1,200,000,000 1,200,000,000
Common Stock, Par or Stated Value Per Share $ 0.01 $ 0.01
Preferred Stock, Shares Issued 1,043,050  
Preferred Stock, Shares Authorized 50,000,000  
Accounts receivable, net of allowance for doubtful accounts of $9 and $13, respectively $ 9 $ 13
Other intangible assets, net of accumulated amortization of $379 and $330, respectively 379 330
Other Noncurrent Assets, Allowance $ 23 $ 21
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares issued (in shares) 818,717,043 818,398,654
Common stock, shares outstanding (in shares) 666,713,829 665,370,128
Treasury stock, shares (in shares) 152,003,214 153,028,526
Variable Interest Entity [Line Items]    
Non Recourse Debt Current $ 1,494 $ 1,430
Non-recourse debt, including $3,990 and $3,918, respectively, related to variable interest entities 15,124 15,005
Consolidated Variable Interest Entities [Member]    
Variable Interest Entity [Line Items]    
Non Recourse Debt Current 324 336
Non-recourse debt, including $3,990 and $3,918, respectively, related to variable interest entities $ 3,990 $ 3,918