Note 11 - Other operating expenses
| 2020 | 2019 | ||||||||
| Net change in asset impairment losses | (99) | (50) | |||||||
| Financial expenses other than interest | (1) | (2) | |||||||
| Foreign exchange losses | (4) | (1) | |||||||
| Other operating expenses | (22) | (30) | |||||||
| Total | (126) | (83) | |||||||
The net change in asset impairment losses includes impairment losses for Lagardère Publishing taken against advances paid to authors totalling €39 million in 2020 and €35 million in 2019.
Other asset impairment losses relate to changes in impairment losses on trade receivables and inventories at Lagardère Publishing, Lagardère Travel Retail and Other Activities, representing €54 million in 2020 and €14 million in 2019.
Other expenses mainly comprise variable rental expenses in respect of retail premises sub-let to partners at a Chinese airport by Lagardère Travel Retail, for which the associated income is billed and recognised in other operating income (see note 12).