Fair Value Measurement of Assets and Liabilities - Additional Information (Details) - USD ($) $ in Billions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable, carrying value	$ 8.9	$ 5.0
Notes payable, fair value	$ 9.6	$ 5.0
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, duration	1 month
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, duration	1 year
Maximum | Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, duration	18 months