Segment and Geographic Information (Details 2) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets
External Revenues	$ 648	$ 653	$ 683	$ 689	$ 703	$ 743	$ 728	$ 711	$ 2,673	$ 2,885	$ 2,785
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	3,628				3,706				3,628	3,706
Inside U.S.
Revenues from External Customers and Long-Lived Assets
External Revenues									1,330	1,219	1,045
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	2,058				1,696				2,058	1,696
Inside Canada
Revenues from External Customers and Long-Lived Assets
External Revenues									198	259	329
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	572				756				572	756
Inside Australia
Revenues from External Customers and Long-Lived Assets
External Revenues									200	261	287
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	282				358				282	358
All other
Revenues from External Customers and Long-Lived Assets
External Revenues									945	1,146	$ 1,124
Equipment on Operating Leases and Non-Leased Equipment (included in Other Assets), net	$ 716				$ 896				$ 716	$ 896