Marketable Securities, at Fair Value (Tables)

12 Months Ended

Dec. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation

The Company's nonqualified trusts hold available-for-sale securities for funding requirements of the Company's nonqualified pension plans (Note 15) as follows:

	As of December 31,
	2018	2017
	(In $ millions)
Amortized cost	31	32
Gross unrealized gain	—	—
Gross unrealized loss	—	—
Fair value	31	32