Marketable Securities, at Fair Value

3 Months Ended

Mar. 31, 2012

Investments, Debt and Equity Securities [Abstract]

Marketable Securities, at Fair Value

Marketable Securities, at Fair Value

The Company’s captive insurance companies and nonqualified trusts hold available-for-sale securities for capitalization and funding requirements, respectively.

The amortized cost, gross unrealized gain, gross unrealized loss and fair values for available-for-sale securities by major security type are as follows:

	Amortized Cost	Gross Unrealized Gain	Gross Unrealized Loss	Fair Value
	(In $ millions)
Mutual funds	63	—	—	63
As of March 31, 2012	63	—	—	63
Mutual funds	64	—	—	64
As of December 31, 2011	64	—	—	64

See Note 16, Fair Value Measurements, for additional information regarding the fair value of the Company's marketable securities.