Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss, Current	$ 5,000,000	$ 13,000,000
Finite-Lived Intangible Assets, Accumulated Amortization	385,000,000	330,000,000
Other Noncurrent Assets, Allowance	23,000,000	21,000,000
Non Recourse Debt Current	1,367,000,000	1,430,000,000
Non Recourse Debt Non Current	$ 13,603,000,000	$ 15,005,000,000
Preferred Stock, Shares Authorized	50,000,000
Preferred Stock, Shares Issued	1,043,050
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,200,000,000	1,200,000,000
Common stock, shares issued (in shares)	818,717,043	818,398,654
Common stock, shares outstanding (in shares)	666,793,625	665,370,128
Treasury stock, shares (in shares)	151,923,418	153,028,526
Preferred stock (without par value, 50,000,000 shares authorized; 1,043,050 issued and outstanding at December 31, 2021)	$ 825,000,000	$ 0
Common stock ($0.01 par value, 1,200,000,000 shares authorized; 818,717,043 issued and 666,793,625 outstanding at December 31, 2021 and 818,398,654 issued and 665,370,128 outstanding at December 31, 2020)	8,000,000	8,000,000
Consolidated Variable Interest Entities [Member]
Non Recourse Debt Current	302,000,000	336,000,000
Non Recourse Debt Non Current	$ 2,223,000,000	$ 3,918,000,000