Consolidated Statements of Equity and Redeemable Noncontrolling Interest (Redeemable Noncontrolling Interest) - USD ($) $ in Millions	Total	Redeemable Noncontrolling Interest
Beginning balance at Dec. 31, 2018		$ 1,004
Net income attributable to redeemable noncontrolling interest		20
Distributions to noncontrolling interests		(20)
Ending balance at Mar. 31, 2019		1,004
Beginning balance at Dec. 31, 2018		1,004
Net income attributable to redeemable noncontrolling interest	$ 41
Ending balance at Jun. 30, 2019		1,005
Beginning balance at Mar. 31, 2019		1,004
Net income attributable to redeemable noncontrolling interest	21	21
Distributions to noncontrolling interests		(20)
Ending balance at Jun. 30, 2019		$ 1,005
Beginning balance at Dec. 31, 2019	968
Net income attributable to redeemable noncontrolling interest	20
Distributions to noncontrolling interests	(20)
Ending balance at Mar. 31, 2020	968
Beginning balance at Dec. 31, 2019	968
Net income attributable to redeemable noncontrolling interest	41
Ending balance at Jun. 30, 2020	968
Beginning balance at Mar. 31, 2020	968
Net income attributable to redeemable noncontrolling interest	21
Distributions to noncontrolling interests	(21)
Ending balance at Jun. 30, 2020	$ 968