Strategic Investments (Tables)

9 Months Ended

Sep. 30, 2019

Investments [Abstract]

Investment [Table Text Block]

The aggregate carrying amount of our strategic investments was comprised of the following:

	As of
(in millions)	September 30, 2019		December 31, 2018
Equity method investments	$	270	$	303
Measurement alternative investments (1)	173		94
Notes receivable	23		26
	$	468	$	424

(1)

Measurement alternative investments are privately-held equity securities without readily determinable fair values that are measured at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer.