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Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2013
Accounting Policies [Abstract]  
Activity in allowance for doubtful trade accounts receivable
The activity in the allowance for doubtful accounts receivable for the years ended December 31 is as follows:
 
In millions
2013
 
2012
 
2011
Beginning balance
$
243

 
$
189

 
$
182

Additions charged to bad debt expense
195

 
149

 
129

Write-offs charged to allowance
(182
)
 
(95
)
 
(122
)
Ending balance
$
256

 
$
243

 
$
189
Components of property and equipment
The following are the components of property and equipment at December 31: 
In millions
2013
 
2012
Land
$
1,460

 
$
1,429

Building and improvements
2,694

 
2,614

Fixtures and equipment
8,419

 
7,928

Leasehold improvements
3,320

 
3,105

Software
1,515

 
1,230

 
17,408

 
16,306

Accumulated depreciation and amortization
(8,793
)
 
(7,674
)
Property and equipment, net
$
8,615

 
$
8,632
Reconciliation of the changes in the redeemable noncontrolling interest
The following is a reconciliation of the changes in the redeemable noncontrolling interest for the years ended December 31, 2012 and 2011:
 
In millions
2012
 
2011
Beginning balance
$
30

 
$
34

Net loss attributable to noncontrolling interest
(2
)
 
(4
)
Purchase of noncontrolling interest
(26
)
 
—

Reclassification to capital surplus in connection with purchase of
 
 
 
noncontrolling interest
(2
)
 
—

Ending balance
$
—

 
$
30
Schedule of Accumulated Other Comprehensive Income (Loss) by Component
Changes in accumulated other comprehensive income (loss) by component are shown below:
 
Year Ended December 31, 2013(1)
In millions
Losses on Cash Flow Hedges
 
Pension and Other Postretirement Benefits
 
Foreign Currency
 
Total
Balance, December 31, 2012
$
(16
)
 
$
(165
)
 
$
—

 
$
(181
)
     Other comprehensive income (loss) before
       reclassifications
—

 
—

 
(30
)
 
(30
)
     Amounts reclassified from accumulated
       other comprehensive income (2)
3

 
59

 
—

 
62

Net other comprehensive income (loss)
3

 
59

 
(30
)
 
32

Balance, December 31, 2013
$
(13
)
 
$
(106
)
 
$
(30
)
 
$
(149
)

(1)
All amounts are net of tax.
(2)
The amounts reclassified from accumulated other comprehensive income for cash flow hedges are recorded within interest expense, net on the consolidated statement of income. The amounts reclassified from accumulated other comprehensive income for pension and other postretirement benefits are included in operating expenses on the consolidated statement of income.