27. Off-balance sheet arrangements
Contractual obligations and commitments
We entered into lease agreements for offices, laboratories and cars. As a consequence of the adoption of IFRS 16 Leases, on 1 January 2019, lease obligations in the scope of the new standard are presented as lease liabilities in the statements of financial position and no longer disclosed separately as off-balance sheet commitments. We refer to note 22 for a breakdown of our lease liabilities.
On 31 December 2020, we had outstanding obligations for future purchase commitments, which become due as follows:
(thousands of €)  | 
            Total  | 
            Less than  | 
            1 – 3 years  | 
            3 – 5 years  | 
            More than  | 
        
Purchase commitments  | 
            347,873  | 
            271,922  | 
            73,009  | 
            2,870  | 
            72  | 
        
On 31 December 2019, we had outstanding obligations for purchase commitments, which become due as follows:
(thousands of €)  | 
            Total  | 
            Less than  | 
            1 – 3 years  | 
            3 – 5 years  | 
            More than  | 
        
Purchase commitments  | 
            251,670  | 
            175,006  | 
            70,675  | 
            5,989  | 
            -  | 
        
On 31 December 2019 we were committed to two leases which had not yet started. The total future cash outflows for leases that had not yet commenced were as follows:
(thousands of €)  | 
            Total  | 
            Less than  | 
            1 – 3 years  | 
            3 – 5 years  | 
            More than  | 
        
Lease commitments not commenced  | 
            8,986  | 
            5,793  | 
            1,502  | 
            1,502  | 
            188  | 
        
In addition to the tables above, we have a contractual cost sharing obligation related to our collaboration agreement with Gilead for filgotinib. The contractual cost sharing commitment amounted to €614.1 million at 31 December 2019.
On 31 December 2020, after the recent renegotiation of the filgotinib collaboration, our estimate of this cost sharing commitment amounts to €493.4 million, for which we have direct purchase commitments of €18.1 million at 31 December 2020 (€27.5 million at 31 December 2019) reflected in the tables above.