Commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Minimum payments under non-cancellable operating leases capitalized software licenses and purchase commitments

As of December 31, 2013, we had committed to make the following minimum payments under our non-cancellable operating leases, capitalized software licenses and purchase commitments:

	Operating Leases		Capitalized Software Licenses		Purchase Commitments
2014	$	96	$	44	$	102
2015	81		43		46
2016	60		26		31
2017	44		—		24
2018	32		—		8
Thereafter	100		—		22