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Consolidated Balance Sheets (Parenthetical) shares in Millions, $ in Millions	Sep. 30, 2020 USD ($) shares	Sep. 30, 2020 SFr / shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2019 SFr / shares
Allowance for credit losses | $	$ 117		$ 135
Common stock, par or stated value per share | SFr / shares		SFr 0.10		SFr 0.10
Ordinary shares, authorized	2,495		2,495
Ordinary shares, issued	1,202		1,198
Treasury shares	106		106

X

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

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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