Investments in Unconsolidated Subsidiaries and Affiliates (Tables)

6 Months Ended

Jun. 30, 2018

Equity Method Investments And Joint Ventures [Abstract]

Summary of Investments in Unconsolidated Subsidiaries and Affiliates

A summary of investments in unconsolidated subsidiaries and affiliates as of June 30, 2018 and December 31, 2017 is as follows:

	June 30, 2018		December 31, 2017
	(in millions)
Equity method	$	534	$	555
Cost method		3		6
Total	$	537	$	561