Commitments (Tables)

12 Months Ended

Dec. 31, 2013

Table Text Block [Abstract]

Schedule of Future Minimum Lease Payments

The following summarizes future minimum lease payments under operating leases at December 31, 2013:

millions
2014	$	964
2015	948
2016	755
2017	525
2018	309
Later years	189
Total future minimum lease payments	$	3,690