Investments and Related Matters (Tables)

12 Months Ended

Dec. 31, 2018

Investment Segment

Investment and Related Matters [Line Items]

Investment

	December 31,
	2018		2017
Assets	(in millions)
Investments:
Equity securities:
Basic materials	$	414	$	1,170
Consumer, non-cyclical	2,161		2,551
Consumer, cyclical	1,161		777
Energy	1,598		1,489
Financial	167		2,185
Technology	1,040		833
Other	145		372
	6,686		9,377
Corporate debt securities	181		155
	$	6,867	$	9,532
Liabilities
Securities sold, not yet purchased, at fair value:
Equity securities:
Consumer, non-cyclical	$	57	$	101
Consumer, cyclical	106		667
Energy	305		110
Industrial	—		110
	468		988
Corporate debt securities	—		35
	$	468	$	1,023

Other Segments and Holding Company

Investment and Related Matters [Line Items]

Investment

	December 31,
	2018		2017
	(in millions)
Equity method investments	$	143	$	83
Other investments (measured at fair value)	1,327		400
	$	1,470	$	483