Consolidated Statement of Changes in Stockholders' Equity (USD $) In Millions, unless otherwise specified		Total	Common stock	Treasury stock	Profit employed in the business	Accumulated other comprehensive income (loss)	Noncontrolling interests
Balance at Dec. 31, 2011		$ 12,929	$ 4,273	$ (10,281)	$ 25,219	$ (6,328)	$ 46
Increase (Decrease) in Stockholders' Equity
Profit of consolidated and affiliated companies		5,022	0	0	4,984	0	38
Foreign currency translation, net of tax		35	0	0	0	59	(24)
Pension and other postretirement benefits, net of tax		180	0	0	0	175	5
Derivative financial instruments, net of tax		(25)	0	0	0	(25)	0
Available-for-sale securities, net of tax		25	0	0	0	24	1
Change in ownership from noncontrolling interests		1	0	0	0	0	1
Dividends declared		(639)	0	0	(639)	0	0
Distribution to noncontrolling interests		(5)	0	0	0	0	(5)
Common shares issued from treasury stock for stock-based compensation: 4,792,341 and 6,400,328 for the nine months ended September 30, 2013 and 2012, respectively		41	(122)	163	0	0	0
Stock-based compensation expense		208	208	0	0	0	0
Net excess tax benefits from stock-based compensation		164	164	0	0	0	0
Cat Japan share redemption	[1]	0	(74)	0	(23)	107	(10)
Balance at Sep. 30, 2012		17,936	4,449	(10,118)	29,541	(5,988)	52
Balance at Dec. 31, 2012		17,582	4,481	(10,074)	29,558	(6,433)	50
Increase (Decrease) in Stockholders' Equity
Profit of consolidated and affiliated companies		2,797	0	0	2,786	0	11
Foreign currency translation, net of tax		(255)	0	0	0	(257)	2
Pension and other postretirement benefits, net of tax		386	0	0	0	386	0
Derivative financial instruments, net of tax		44	0	0	0	44	0
Available-for-sale securities, net of tax		13	0	0	0	13	0
Change in ownership from noncontrolling interests		8	(6)	0	0	0	14
Dividends declared		(730)	0	0	(730)	0	0
Distribution to noncontrolling interests		(10)	0	0	0	0	(10)
Common shares issued from treasury stock for stock-based compensation: 4,792,341 and 6,400,328 for the nine months ended September 30, 2013 and 2012, respectively		77	(83)	160	0	0	0
Stock-based compensation expense		196	196	0	0	0	0
Net excess tax benefits from stock-based compensation		69	69	0	0	0	0
Common shares repurchased: 23,484,843 for the nine months ended September 30, 2013	[2]	(2,000)	0	(2,000)	0	0	0
Balance at Sep. 30, 2013		$ 18,177	$ 4,657	$ (11,914)	$ 31,614	$ (6,247)	$ 67

[1] 1 See Notes 12 and 17 regarding the Cat Japan share redemption.

[2] 2 See Note 11 regarding shares repurchased.