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Commitments and contingencies (Tables)
6 Months Ended
Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]  
Summary of the Company's future commitments

The following table summarizes the Company’s commitments at June 30, 2017:

(in millions)
Remaining 2017$24
201851
201953
202026
202122
202223
Thereafter84
Total$283
Future minimum lease commitments under non-cancellable operating leases

Future minimum lease commitments under non-cancellable operating leases at June 30, 2017 were as follows:

(in millions)
Remaining 2017$5
20189
20197
20206
20214
2022-
Thereafter 1
Total $32