Income Statement Disclosures

14. OTHER OPERATING EXPENSES

Breakdown of Other Operating Expenses
in million €20182017
Expenses for rents and leases1,891.91,818.4
Advertising expenses1,024.91,037.4
Other occupancy costs925.2880.0
Expenses from supplementary payments for goods traffic855.5787.2
Expenses for maintenance and consumables794.2732.5
Vehicle fleet, freight746.5655.9
Expenses for third-party services536.0516.7
General and administrative expenses287.7305.8
Voluntary social benefits111.4113.2
CRS communication, IT (Travel and Tourism)53.850.0
Travel expenses48.650.3
Addition to provision for contingent losses from onerous contracts45.266.4
Losses on the disposal of non-current assets40.336.4
Other taxes39.831.8
Contributions, fees and duties34.554.6
Other personnel expenses29.126.1
Expenses from exchange rate changes28.79.2
Insurance27.227.3
Losses on writedowns on receivables3.139.8
Miscellaneous other operating expenses358.3296.3
Total7,881.97,535.3

The increase in other operating expenses is due primarily to an increase in the expenses for the vehicle fleet and freight, expenses for rents and leases, expenses from supplementary payments for goods traffic, expenses for maintenance and consumables as well as other occupancy costs. Some of these services are closely related to the corresponding items of operating income. By contrast, a decline was recorded in the expenses relating to losses on writedowns on receivables, to the addition to the provision for contingent losses from onerous contracts as well as to contributions, fees and duties.

The expenses for the vehicle fleet and freight increased primarily in the Retail Germany business segment. The increase resulted among other things from the increase in the use of third-party logistics services in the context of expanding the Group's business activities.

The expenses for the rents and leases increased primarily in the Retail Germany and Retail International business segments. The increase was due in part to the first-time inclusion of REWE Dortmund SE & Co. KG, Dortmund, for the entire year, and the higher number of leased properties that are subleased to partners. In the Retail International business segment, the increase was mainly attributable to the first-time inclusion of UAB Palink.

The increase in expenses for maintenance and consumables related mainly to the Retail Germany business segment. The increase was due, among other things, to structural changes in connection with restructuring measures.

The increase in other occupancy costs relates primarily to the Retail Germany and Retail International business segments.

The increase in expenses from exchange rate changes relates primarily to the Other and Travel and Tourism business segments. This relates to measurement gains and losses from exchange losses and from stand-alone derivatives concluded to hedge purchases of goods in foreign currencies or to hedge foreign currency liabilities from hotel purchases.

In the previous year, allowances on receivables related mainly to the Travel and Tourism business segment and were due in part to write-downs on the receivables of an airline.

The decrease in additions to the provision for expected losses from onerous contracts is attributable primarily to the DIY Stores and Retail Germany business segments.

In the previous year, expenses related to contributions, fees and duties had included the risk provisions for the duties to be paid in the Retail International business segment.