Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

Financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2018 are classified using the fair value hierarchy in the table below:

	Total		Level 1		Level 2
	(In millions)
Assets
Cash equivalents:
Money market funds	$	39	$	39	$	—
Time deposits	761		—		761
Derivatives:
Foreign currency forward contracts	23		—		23
Investments:
Time deposits	458		—		458
Marketable equity securities	161		161		—
Total assets	$	1,442	$	200	$	1,242

Financial assets measured at fair value on a recurring basis as of December 31, 2017 are classified using the fair value hierarchy in the table below:

	Total		Level 1		Level 2
	(In millions)
Assets
Cash equivalents:
Money market funds	$	16	$	16	$	—
Time deposits	552		—		552
Derivatives:
Foreign currency forward contracts	6		—		6
Investments:
Time deposits	469		—		469
Marketable equity securities	263		263		—
Total assets	$	1,306	$	279	$	1,027