Note 10 Property, plant and equipment, net

“Property, plant and equipment, net” consisted of the following:

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December 31, ($ in millions)

2012

2011

Land and buildings

4,316

3,648

Machinery and equipment

7,603

6,847

Construction in progress

627

548

 

12,546

11,043

Accumulated depreciation

(6,599)

(6,121)

Total

5,947

4,922

Assets under capital leases included in “Property, plant and equipment, net” were as follows:

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December 31, ($ in millions)

2012

2011

Land and buildings

88

80

Machinery and equipment

95

75

 

183

155

Accumulated depreciation

(103)

(83)

Total

80

72

In 2012, 2011 and 2010, depreciation expense, including depreciation of assets under capital leases, was $733 million, $660 million and $545 million, respectively.