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Noncurrent Other Liabilities (Tables)
 12 Months Ended
Dec. 31, 2013
Other Liabilities, Noncurrent [Abstract]  
Schedule of Noncurrent Other Liabilities
 
As of December 31,
 
2013
 
2012
 
(In $ millions)
Environmental (Note 15)
67

 
78

Insurance
50

 
58

Deferred revenue
28

 
36

Deferred proceeds(1)
53

 
909

Asset retirement obligations
18

 
26

Derivatives (Note 21)
3

 
8

Restructuring (Note 17)
2

 
—

Income taxes payable
20

 
2

Other
46

 
35

Total
287

 
1,152

______________________________
(1)
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, were recognized during the three months ended December 31, 2013 (Note 27).
Schedule of Changes in Asset Retirement Obligations
Changes in asset retirement obligations are as follows:
 
Year Ended December 31,
 
2013
 
2012
 
2011
 
(In $ millions)
Balance at beginning of year
64

 
64

 
77

Additions(1)
5

 
3

 
—

Accretion
2

 
3

 
3

Payments
(23
)
 
(12
)
 
(10
)
Revisions to cash flow estimates(2)
(2
)
 
5

 
(5
)
Exchange rate changes
1

 
1

 
(1
)
Balance at end of year
47

 
64

 
64

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