Accounting Policies - Summary of Balance of Allowances for Credit Losses, Doubtful Accounts with Accounts Receivable and Changes (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Financing Receivable Allowance For Credit Losses [Line Items]
Balance	$ 126
Current period provision	30
Write-offs charged against the allowance	(11)
Translation	5
Balance	150
Americas
Financing Receivable Allowance For Credit Losses [Line Items]
Balance	38
Current period provision	10
Write-offs charged against the allowance	(4)
Translation	(2)
Balance	42
Europe, Middle East & Africa
Financing Receivable Allowance For Credit Losses [Line Items]
Balance	78
Current period provision	15
Write-offs charged against the allowance	(7)
Translation	6
Balance	92
Asia Pacific
Financing Receivable Allowance For Credit Losses [Line Items]
Balance	10
Current period provision	5
Write-offs charged against the allowance	0
Translation	1
Balance	$ 16