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Cash and cash equivalents (Tables)
12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Summary of Detailed Information about Cash and Cash Equivalents
    
2019  
   2018   2017 
Cash at bank and in hand
   4,619      3,725    3,720 
Short-term deposits
   2,518      2,524    2,544 
Money market investments
   5,116      2,493    4,496 
Short-term collateral
   11      2    7 
At December 31
  
 
            12,263  
 
  
 
            8,744
 
  
 
            10,768
 
Disclosure of Cash and Cash Equivalents
For the purposes of the cash flow statement, cash and cash equivalents comprise the following:
 
    
Note
     
2019  
     2018     2017 
Cash and cash equivalents
       12,263        8,744      10,768 
Cash classified as Assets held for sale
       -        -      260 
Bank overdrafts
  
 
41
 
     -        -      (2
Bank overdrafts classified as Liabilities held for sale
  
 
 
 
     -        -      (1
Net cash and cash equivalents
  
 
 
 
    
 
            12,263  
 
    
 
            8,744
 
    
 
            11,026
 
Disclosure of Detailed Information of Cash Flow Statement
Summary cash flow statement
  
2019  
               2018              2017 
Net cash flows from operating activities
   7,302      517   553 
Net cash flows from investing activities
   (86)     (438  (1,196
Net cash flows from financing activities
   (3,730)     (2,395  519 
Net increase in cash and cash equivalents
  
 
            3,486  
 
  
 
(2,317
 
 
(125
Summary of Reconciliation of Liabilities Arising from Financing Activities
The table below shows the reconciliation between the net cash flows from financing activities and the liabilities as included in the consolidated statement of financial position.
 
  
 
    Cash flows
 
     
 
Non-cash changes
 
Reconciliation of debt from
financing
activities
 
 
At January 1,
2019
 
 
 
 
Addition
 
 
 
Repayment
 
     
 
Disposal of
a business

 
 
 

 
 
Realized gains /
losses in
income
statement
 

 
 
 
 
 

 
Movements
related to fair
value hedges
 
 
 
 
 
Amortization
 
 
 

 
Transfer to/
from other
headings
 
 
 
 
 
Other
 
 
 

 
Net
exchange
difference

 
 
 
 
At December 31,
2019
 
 
Subordinated borrowings
  1,389   806   -    -   -   -   1   -   -   11   2,207 
Trust pass-through securities
  133   -   -    -   -   1   (1  -   -   2   136 
Borrowings
  12,061   4,117   (7,014   -   (8  -   1   -   -   149   9,307 
Assets held to hedge Trust pass-through securities
  10   -   -       -   1   -   -   -   -   -   11 
   Cash flows       Non-cash changes 
Reconciliation of debt from
financing
activities
  At January 1,
2018
 
 
  Addition   Repayment       Disposal of
a business

 
  
 
 
Realized gains /
losses in
income
statement
 
 
 
 
  
 
Movements
related to fair
value hedges
 
 
 
  Amortization   
 
Transfer to/
from other
headings
 
 
 
  Other   
 
Net
exchange
difference
 
 
 
  At December 31,
2018
 
 
Subordinated borrowings
  764   640   -    -   -   -   2   (68  -   52   1,389 
Trust pass-through securities
  133   -   -    -   -   (6  -   -   -   6   133 
Borrowings
  13,635   3,545   (5,211   (151  (23  -   2   -   -   263   12,061 
Assets held to hedge Trust pass-through securities
  15   -   -       -   (6  -   -   -   -   1   10