Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	$ 5	$ 5
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	1,043,050
Preferred Stock, Shares Authorized	50,000,000	50,000,000
Accounts receivable, net of allowance for doubtful accounts of $5 and $5, respectively	$ 5	$ 5
Other intangible assets, net of accumulated amortization of $411 and $385, respectively	411	385
Other Noncurrent Assets, Allowance	$ 23	$ 23
Preferred Stock, Shares Outstanding	1,043,050	1,043,050
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	818,735,314	818,717,043
Common stock, shares outstanding (in shares)	667,859,645	666,793,625
Treasury stock, shares (in shares)	150,875,669	151,923,418
Variable Interest Entity [Line Items]
Non-recourse debt, including $657 and $302, respectively, related to variable interest entities	$ 2,254	$ 1,367
Non-recourse debt, including $1,909 and $2,223, respectively, related to variable interest entities	14,016	13,603
Consolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Non-recourse debt, including $657 and $302, respectively, related to variable interest entities	657	302
Non-recourse debt, including $1,909 and $2,223, respectively, related to variable interest entities	$ 1,909	$ 2,223