Leased Facilities (Tables)

12 Months Ended

Dec. 31, 2011

Leased Facilities [Abstract]

Leased Facilities


		Lease Payments Under Minimum Commitments				Related Sublease Rental Income
		(millions of dollars)

2012		$	2,152			$	18
2013			1,696				17
2014			1,219				15
2015			802				12
2016			415				10
2017 and beyond			1,630				35
Total		$	7,914			$	107

Net Rental Cost


		2011				2010				2009
		(millions of dollars)

Rental cost		$	4,061			$	3,762			$	4,426
Less sublease rental income			74				90				98
Net rental cost		$	3,987			$	3,672			$	4,328