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Noncurrent Other Liabilities (Tables)
 12 Months Ended
Dec. 31, 2012
Other Liabilities, Noncurrent [Abstract]  
Schedule of Noncurrent Other Liabilities
 
As of December 31,
 
2012
 
2011
 
(In $ millions)
Environmental (Note 15)
78

 
71

Insurance
58

 
64

Deferred revenue
36

 
40

Deferred proceeds(1)
909

 
892

Asset retirement obligations
26

 
42

Derivatives (Note 21)
8

 
13

Income taxes payable
2

 
2

Other
35

 
29

Total
1,152

 
1,153

______________________________
(1) 
Primarily relates to proceeds received from the Frankfurt, Germany Airport as part of a settlement for the Company to cease operations and sell its Kelsterbach, Germany manufacturing site, included in the Advanced Engineered Materials segment (Note 27). Such proceeds will be deferred until the transfer of title to the Frankfurt, Germany Airport.
Schedule of Changes in Asset Retirement Obligations
Changes in asset retirement obligations are as follows:
 
Year Ended December 31,
 
2012
 
2011
 
2010
 
(In $ millions)
Balance at beginning of year
64

 
77

 
67

Additions(1)
3

 
—

 
—

Accretion
3

 
3

 
3

Payments
(12
)
 
(10
)
 
(15
)
Revisions to cash flow estimates(2)
5

 
(5
)
 
23

Exchange rate changes
1

 
(1
)
 
(1
)
Balance at end of year
64

 
64

 
77

______________________________
(1) 
Primarily relates to sites which management no longer considers to have an indeterminate life.
(2) 
Primarily relates to revisions to the estimated cost of future plant closures.