31. Causes of differences between items of the statement of financial position and changes which are due to changes in certain items of the statement of cash flows, and break-down of other adjustments under operating activity

Increase/(decrease) in cash and cash equivalents Year ended Dec 31 2014 Year ended Dec 31 2013
1) Cash and cash equivalent in the statement of financial position at beginning of the period
 
 2,827  1,948
 a) Net effect of exchange rate changes on the balance of cash held in foreign currencies at beginning of the period  1  1
Cash and cash equivalents in the statement of cash flows at beginning of the period (1-a)
 
 2,826  1,947
     
 1) Cash and cash equivalents in the statement of financial position at end of the period
 
 2,958  2,827
 a) Net effect of exchange rate changes on the balance of cash held in foreign currencies end of the period  2  1
Cash and cash equivalents in the statement of cash flows at end of the period (2-b)
 
 2,956  2,826
     
I. Increase/(decrease) in cash and cash equivalents in the statement of financial position (2-1)
 
 131  879
II. Increase/(decrease) in exchange rate changes on the balance of cash held in foreign currencies (b-a)
 
 1  -
Increase/(decrease) in cash and cash equivalents in the statement of cash flows (I - II)
 
 130  879
     
Increase/(decrease) in trade and other receivables Year ended Dec 31 2014 Year ended Dec 31 2013
(Increase)/decrease in other financial assets in the statement of financial position
 
 (1)  (70)
Increase/(decrease) in trade and other receivables in the statement of financial position  (150)  1,288
Increase/(decrease) in shares – adjustment to investing activities  (5)  3
Increase/(decrease) in lease receivables in financial assets – adjustment to investing activities  1  -
Increase/(decrease) in investment receivables from disposal and purchase of intangible assets and property, plant and equipment
 
 10  (4)
Increase/(decrease) in prepayments for property, plant and equipment  5  25
Due and payable portion of loans advanced  12  68
Increase/(decrease) in trade and other receivables in the statement of cash flows  (128)  1,310
(Increase)/decrease in inventories Year ended Dec 31 2014 Year ended Dec 31 2013
(Increase)/decrease in inventories in the statement of financial position  189  (314)
 Tangible assets under construction transferred to inventories (adjustment to investing activity)  -  (7)
(Increase)/decrease in inventories in the statement of cash flows  189  (321)
(Decrease)/increase in employee benefit obligations Year ended Dec 31 2014 Year ended Dec 31 2013
(Decrease)/increase in employee benefit obligations in the statement of financial position
 
 11  140
(Decrease)/increase in employee benefit obligations in the statement of cash flows
 
 11  140
Increase/(decrease) in provisions Year ended Dec 31 2014 Year ended Dec 31 2013
Increase/(decrease) in provisions in the statement of financial position  473  (92)
 Increase/(decrease) in provision for well decommissioning costs which adjusts property, plant and equipment (adjustment to investing activity)
 
 (343)  391
Increase/(decrease) in provisions in the statement of cash flows  130  299
Decrease/(increase) in current liabilities current liabilities Year ended Dec 31 2014 Year ended Dec 31 2013
Decrease/(increase) in current liabilities in the statement of financial position
 
 (444)  366
 Decrease/(increase) in investment liabilities under purchase of
intangible assets and property, plant
 and equipment
 (52)  24
 Other decrease/(increase) in liabilities  19  4
Decrease/(increase) in current liabilities in the statement of cash flows
 
 (477)  394
(Increase)/decrease in other assets in the statement of financial position
 
Year ended Dec 31 2014 Year ended Dec 31 2013
(Increase)/decrease in other assets in the statement of financial position
 
 (89)  5
(Increase)/decrease in other assets in the statement of financial position
 
 39  (87)
 Expense (fees and commission) related to the note issuance programme  19  (7)
(Increase)/decrease in other assets in the statement of cash flows
 
 (31)  (89)
(Decrease)/increase in deferred revenue Year ended Dec 31 2014 Year ended Dec 31 2013
(Decrease)/increase in deferred revenue in the statement of financial position
 
 89  170
 Property, plant and equipment received free of charge  -  (18)
 Grants received for property, plant and equipment  (103)  (162)
Other (decrease)/increase in deferred revenue  -  (5)
(Decrease)/increase in deferred revenue in the statement of cash flows
 
 (14)  (15)
Other items, net, under operating activity Year ended Dec 31 2014 Year ended Dec 31 2013
Derivative financial instruments  (20)  (363)
Written-down expenditure on non-financial non-current assets  347  256
Acquired CO2 emission allowances  (55)  (72)
Other items, net, under operating activity  638  609
Total  910  430