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Restructuring Costs (Tables)
3 Months Ended
Mar. 31, 2012
Restructuring Costs [Abstract]  
Restructuring Activities
Details of the activity from January 1, 2011 through March 31, 2012 regarding restructuring activities, which includes liabilities from actions prior to 2012, are as follows:
 
(In millions of dollars)
Liability at 1/1/11
 
Amounts
Accrued

 
Cash
Paid

 
Other 

 
Liability at 12/31/11
 
Amounts
Accrued

 
Cash
Paid

 
Other 

 
Liability at 3/31/12
Severance
$
40

 
$
29

 
$
(40
)
 
$
(2
)
 
$
27

 
$
4

 
$
(20
)
 
$
6

 
$
17

Future rent under non-cancelable leases and other costs
171

 
22

 
(42
)
 
3

 
154

 

 
(9
)
 
(3
)
 
142

Total
$
211

 
$
51

 
$
(82
)
 
$
1

 
$
181

 
$
4

 
$
(29
)
 
$
3

 
$
159