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Component: (Network and Table)
Network
2301302 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Tables)
(http://www.itw.com/role/DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTables)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Accounting Policies [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
Accounting Policies [Abstract]
 
Changes in Allowances for Uncollectible Accounts
The changes in the allowance for doubtful accounts during 2016, 2015 and 2014 were as follows:

In millions
 
2016
 
2015
 
2014
Beginning balance
 
$
42

 
$
43

 
$
46

Provision charged to expense
 
7

 
7

 
7

Write-offs, net of recoveries
 
(6
)
 
(5
)
 
(7
)
Acquisitions and divestitures
 
1

 

 

Foreign currency translation
 
(1
)
 
(3
)
 
(3
)
Ending balance
 
$
43

 
$
42

 
$
43

 
 
Schedule of Inventory
The major classes of inventory at December 31, 2016 and 2015 were as follows:

In millions
 
2016
 
2015
Raw material
 
$
407

 
$
415

Work-in-process
 
126

 
130

Finished goods
 
629

 
622

LIFO reserve
 
(86
)
 
(81
)
Total inventories
 
$
1,076

 
$
1,086

 
 
Net Plant and Equipment
Net plant and equipment consisted of the following at December 31, 2016 and 2015:

In millions
 
2016
 
2015
Land
 
$
186

 
$
179

Buildings and improvements
 
1,297

 
1,272

Machinery and equipment
 
3,036

 
2,972

Equipment leased to others
 
160

 
156

Construction in progress
 
104

 
76

Gross plant and equipment
 
4,783

 
4,655

Accumulated depreciation
 
(3,131
)
 
(3,078
)
Net plant and equipment
 
$
1,652

 
$
1,577

The ranges of useful lives used to depreciate plant and equipment are as follows:

Buildings and improvements
5—50 years
Machinery and equipment
3—12 years
Equipment leased to others
Term of lease
 
 
Changes in Accrued Warranties
The changes in accrued warranties during 2016, 2015 and 2014 were as follows:

In millions
 
2016
 
2015
 
2014
Beginning balance
 
$
46

 
$
49

 
$
50

Charges
 
(41
)
 
(37
)
 
(41
)
Provision charged to expense
 
42

 
36

 
43

Acquisitions and divestitures
 
1

 

 

Foreign currency translation
 
(3
)
 
(2
)
 
(3
)
Ending balance
 
$
45

 
$
46

 
$
49