Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Minimum rental commitments under long-term non-cancelable operating leases as of December 31, 2014, are payable as follows:

$ in millions
Year Ending December 31
2015	$	267
2016	214
2017	140
2018	84
2019	57
Thereafter	78
Total minimum lease payments	$	840