Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets
Revenues	$ 711	$ 699	$ 695	$ 680	$ 679	$ 678	$ 668	$ 668	$ 662	$ 668	$ 675	$ 640	$ 2,785	$ 2,693	$ 2,645
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	3,637				3,074				2,670				3,637	3,074	2,670
Inside U.S.
Revenues from External Customers and Long-Lived Assets
Revenues													1,045	1,009	991
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	1,437				1,204				1,046				1,437	1,204	1,046
Inside Canada
Revenues from External Customers and Long-Lived Assets
Revenues													329	330	324
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	729				741				643				729	741	643
Inside Australia
Revenues from External Customers and Long-Lived Assets
Revenues													287	302	297
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	434				341				295				434	341	295
All other
Revenues from External Customers and Long-Lived Assets
Revenues													1,124	1,052	1,033
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	$ 1,037				$ 788				$ 686				$ 1,037	$ 788	$ 686