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Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	$ 39	$ 40
Preferred stock:
Preferred Stock, Shares Issued	0
Preferred Stock, Shares Outstanding	0
Preferred Stock, Par or Stated Value Per Share	$ 0.01
Preferred Stock, Shares Authorized	30
Common stock:
Common Stock, Shares, Issued	989	984
Common Stock, Par or Stated Value Per Share	$ 0.01
Common Stock, Shares Authorized	2,000
Treasury Stock, Shares	(476)	(405)

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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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