34 Supplementary information on the statement of cash flows

Changes in operating assets and liabilities

In CHF million   2016   2015
Trade and other receivables   (2)   (3)
Inventories   20   (30)
Other non-financial assets   (104)   (9)
Trade and other payables   134   (77)
Provisions   (141)   248
Other non-financial liabilities   (70)   (51)
Defined benefit obligations   68   56
Total changes in operating assets and liabilities   (95)   134

Other cash flows from financing activities

In 2016, other cash outflows from financing activities amount to CHF 16 million (prior year: cash inflows of CHF 2 million). This relates mainly to payments in connection with hedging contracts and the commitment fee for the guaranteed credit limit.

Non-cash investing and financing transactions

Additions to property, plant and equipment include additions from finance leases amounting to CHF 19 million (prior year: CHF 9 million). As a result of changes in the assumptions made in estimating the provisions for dismantling and restoration costs, a decrease of CHF 49 million net was recognised in property, plant and equipment (prior year: decrease of CHF 55 million). See Note 23.