Lease Commitments

12 Months Ended

Dec. 31, 2012

Leases [Abstract]

Lease Commitments

Lease Commitments

Certain noncancelable leases are classified as capital leases, and the leased assets are included as part of “Properties, plant and equipment, at cost” on the Consolidated Balance Sheet. Such leasing arrangements involve crude oil production and processing equipment, service stations, bareboat charters, office buildings, and other facilities. Other leases are classified as operating leases and are not capitalized. The payments on operating leases are recorded as expense. Details of the capitalized leased assets are as follows:

	At December 31
	2012		2011
Upstream	$	433	$	585
Downstream	316		316
All Other	—		—
Total	749		901
Less: Accumulated amortization	479		568
Net capitalized leased assets	$	270	$	333

     Rental expenses incurred for operating leases during 2012, 2011 and 2010 were as follows:

	Year ended December 31
	2012		2011		2010
Minimum rentals	$	973	$	892	$	931
Contingent rentals	7		11		10
Total	980		903		941
Less: Sublease rental income	32		39		41
Net rental expense	$	948	$	864	$	900

     Contingent rentals are based on factors other than the passage of time, principally sales volumes at leased service stations. Certain leases include escalation clauses for adjusting rentals to reflect changes in price indices, renewal options ranging up to 25 years, and options to purchase the leased property during or at the end of the initial or renewal lease period for the fair market value or other specified amount at that time.

     At December 31, 2012, the estimated future minimum lease payments (net of noncancelable sublease rentals) under operating and capital leases, which at inception had a noncancelable term of more than one year, were as follows:

	At December 31
	Operating		Capital
	Leases		Leases
Year:  2013	$	727	$	45
2014	657		37
2015	618		23
2016	528		13
2017	401		12
Thereafter	617		59
Total	$	3,548	$	189
Less: Amounts representing interest and executory costs			$	(40	)
Net present values			149
Less: Capital lease obligations included in short-term debt			(50		)
Long-term capital lease obligations			$	99