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Severance and Exit Costs (Tables)
3 Months Ended
Jun. 30, 2013
Restructuring and Related Activities [Abstract]  
Severance and exit costs activity
Accrued severance and exit costs and changes in the accruals during the three months ended June 30, 2013 and 2012 were as follows:
(in millions)
Accrued
Balance at
March 31, 2013
 
Expense
 
Change in
Estimate
 
Payments
 
Accretion
and Other
 
Accrued
Balance at
June 30, 2013
Severance charges
$
16

 
$
103

 
$
(1
)
 
$
(28
)
 
$
3

 
$
93

Facility exit charges
23

 
17

 

 
(4
)
 
(3
)
 
33

Total accrued liabilities
$
39

 
 
 
 
 
 
 
 
 
$
126

 
(in millions)
Accrued
Balance at
March 31, 2012
 
Expense
 
Change in
Estimate
 
Payments
 
Accretion
and Other
 
Accrued
Balance at
June 30, 2012
Severance charges
$
13

 
$

 
$
(3
)
 
$
(5
)
 
$

 
$
5

Facility exit charges
40

 

 

 
(3
)
 
(1
)
 
36

Total accrued liabilities
$
53

 
 
 
 
 
 
 
 
 
$
41