Investing Activities (Tables)

6 Months Ended

Jun. 30, 2019

Equity Method Investments and Joint Ventures [Abstract]

Realized Gain (Loss) on Investments [Table Text Block]

The following table presents certain items reflected in Other investing income (loss) – net in the Consolidated Statement of Income:

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2019		2018		2019			2018
	(Millions)
Gain (loss) on deconsolidation of businesses	$	—	$	62	$	(2	)	$	62
Gain on disposition of equity-method investments	122		—		122			—
Impairment of equity-method investments (Note 2)	2		—		(72		)	—
Other	2		6		5			10
Other investing income (loss) – net	$	126	$	68	$	53		$	72