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Commitments, Guarantees and Contingent Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Minimum rental commitments under noncancelable capital and operating leases | Minimum rental commitments under operating leases with an initial or remaining term of more than one year as of December 31, 2017 are in the following table:
($ in millions) |  |
2018 |  | $ | 126 |
2019 |  | 113 |
2020 |  | 95 |
2021 |  | 74 |
2022 |  | 60 |
Thereafter |  | 175 |
Total |  | $ | 643 |

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- Definition Disclosure of future minimum lease payments as of the date of the latest balance sheet presented, in aggregate and for each of the five succeeding fiscal years. + References No definition available. + Details
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