CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) shares in Millions, $ in Millions	Mar. 31, 2020	Dec. 31, 2019
ASSETS
Allowance for trade and other receivables	$ 72	$ 63
Financing Receivable, after Allowance for Credit Loss, Current	389	162
Financing Receivable, Allowance for Credit Loss, Noncurrent	$ 842	$ 351
Common Stock
EQUITY
Common Stock, par value (in dollars per share)	$ 0.01
Common Stock, shares issued (in shares)	4,023
Common Stock, Shares Authorized (in shares)	6,000
Class B Stock
EQUITY
Common Stock, par value (in dollars per share)	$ 0.01
Common Stock, shares issued (in shares)	71
Common Stock, Shares Authorized (in shares)	530