Goodwill (Tables)

3 Months Ended

Mar. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

	Goodwill		Accumulated Impairment Losses			Balance
	(in millions)
Balance as of December 31, 2019	$	2,709	$	(2,102	)	$	607
Impairment loss		—		(607	)		(607	)
Balance as of March 31, 2020	$	2,709	$	(2,709	)	$	—