Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Financing receivable, allowance for credit loss, current	$ 41	$ 13
Accumulated depreciation and amortization	$ 793	$ 746
Common stock, par value (in usd per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	Unlimited
Common stock, shares issued (in shares)	302,623,813	298,281,081
Common stock, shares outstanding (in shares)	302,623,813	298,281,081

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of allowance for credit loss on financing receivable, classified as current.

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