Investments - Investment Segment - Summarized Financial Information (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Net sales	$ 1,764			$ 2,484			$ 4,950	$ 7,371
Cost of goods sold	1,599			2,069			4,543	6,098
Net income (loss)	(1,400)	$ 864	$ (2,306)	(373)	$ (597)	$ (664)	(2,842)	(1,634)
Net income (loss) attributable to shareholders	$ (714)			$ (49)			(1,799)	(941)
Herbalife
Net sales							2,609	3,657
Cost of goods sold							518	728
Net income (loss)							161	254
Net income (loss) attributable to shareholders							$ 161	$ 254