Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value, Assets and Liabilities Measured on Recurring Basis

Assets and liabilities measured and recorded at fair value on a recurring basis consisted of the following (in millions):

	December 31, 2020						December 31, 2019
	Total		Level 1		Level 2		Total		Level 1		Level 2
Assets
Mutual funds	$	1,335	$	1,335	$	—	$	1,363	$	1,363	$	—
U.S. Government securities	92		—		92		99		—		99
Other securities	555		341		214		319		171		148
Derivatives	52		—		52		18		—		18
Liabilities
Derivatives	22		—		22		23		—		23
Assets measured at NAV
Other commingled funds	20						19