Commitments and contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

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

As of December 31, 2014, 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
2015	$	87	$	39	$	96
2016	66		27		52
2017	45		—		35
2018	33		—		14
2019	21		—		10
Thereafter	80		—		2