Marketable Securities, at Fair Value

3 Months Ended

Mar. 31, 2013

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:

	As of March 31, 2013	As of December 31, 2012
	(In $ millions)
Mutual Funds
Amortized cost	49	53
Gross unrealized gain	—	—
Gross unrealized loss	—	—
Fair value	49	53

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