Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-01-01 |
As at 2018-12-31 |
|---|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||||
| Property, plant and equipment [abstract] | ||||
| Property, plant and equipment |
10,301,000,000
PLN
|
10,402,000,000
PLN
|
10,290,000,000
PLN
|
— |
| Intangible assets and goodwill [abstract] | ||||
| Intangible assets other than goodwill [abstract] | ||||
| Intangible assets other than goodwill |
4,184,000,000
PLN
|
4,545,000,000
PLN
|
4,871,000,000
PLN
|
— |
| Goodwill |
2,285,000,000
PLN
|
2,263,000,000
PLN
|
2,147,000,000
PLN
|
— |
| Trade and other non-current receivables [abstract] | ||||
| Non-current trade receivables |
382,000,000
PLN
|
455,000,000
PLN
|
552,000,000
PLN
|
— |
| Non-current prepayments and non-current accrued income including non-current contract assets [abstract] | ||||
| Non-current accrued income including non-current contract assets [abstract] | ||||
| Non-current contract assets |
70,000,000
PLN
|
65,000,000
PLN
|
27,000,000
PLN
|
— |
| Miscellaneous non-current assets [abstract] | ||||
| Non-current derivative financial assets | — |
44,000,000
PLN
|
48,000,000
PLN
|
— |
| Other non-current assets |
41,000,000
PLN
|
65,000,000
PLN
|
53,000,000
PLN
|
— |
| Trade and other current receivables [abstract] | ||||
| Current trade receivables |
1,850,000,000
PLN
|
2,132,000,000
PLN
|
2,371,000,000
PLN
|
— |
| Current prepayments and current accrued income other than current contract assets [abstract] | ||||
| Current prepayments [abstract] | ||||
| Current prepaid expenses |
83,000,000
PLN
|
65,000,000
PLN
|
46,000,000
PLN
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | ||||
| Current accrued income including current contract assets [abstract] | ||||
| Current contract assets |
87,000,000
PLN
|
117,000,000
PLN
|
138,000,000
PLN
|
— |
| Classes of current inventories [abstract] | ||||
| Current inventories |
230,000,000
PLN
|
218,000,000
PLN
|
240,000,000
PLN
|
— |
| Classes of current inventories, alternative [abstract] | ||||
| Cash and cash equivalents [abstract] | ||||
| Cash and cash equivalents |
358,000,000
PLN
|
404,000,000
PLN
|
611,000,000
PLN
|
611,000,000
PLN
|
| Miscellaneous current assets [abstract] | ||||
| Current derivative financial assets |
147,000,000
PLN
|
1,000,000
PLN
|
52,000,000
PLN
|
— |
| Other current assets |
240,000,000
PLN
|
227,000,000
PLN
|
214,000,000
PLN
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | ||||
| Non-current portion of other non-current borrowings |
2,000,000
PLN
|
8,000,000
PLN
|
11,000,000
PLN
|
— |
| Current borrowings and current portion of non-current borrowings, by type [abstract] | ||||
| Other current borrowings and current portion of other non-current borrowings |
19,000,000
PLN
|
61,000,000
PLN
|
10,000,000
PLN
|
— |
| Trade and other non-current payables [abstract] | ||||
| Non-current trade payables |
242,000,000
PLN
|
348,000,000
PLN
|
473,000,000
PLN
|
— |
| Non-current accruals and non-current deferred income including non-current contract liabilities [abstract] | ||||
| Non-current deferred income including non-current contract liabilities [abstract] | ||||
| Non-current contract liabilities [abstract] | ||||
| Non-current contract liabilities |
338,000,000
PLN
|
344,000,000
PLN
|
331,000,000
PLN
|
— |
| Trade and other current payables [abstract] | ||||
| Current trade payables |
2,236,000,000
PLN
|
2,367,000,000
PLN
|
2,469,000,000
PLN
|
— |
| Current accruals and current deferred income including current contract liabilities [abstract] | ||||
| Current deferred income including current contract liabilities [abstract] | ||||
| Current contract liabilities [abstract] | ||||
| Current contract liabilities |
476,000,000
PLN
|
471,000,000
PLN
|
460,000,000
PLN
|
— |
| Miscellaneous non-current liabilities [abstract] | ||||
| Non-current derivative financial liabilities |
100,000,000
PLN
|
55,000,000
PLN
|
31,000,000
PLN
|
— |
| Other non-current liabilities |
50,000,000
PLN
|
50,000,000
PLN
|
26,000,000
PLN
|
— |
| Miscellaneous current liabilities [abstract] | ||||
| Current derivative financial liabilities |
32,000,000
PLN
|
20,000,000
PLN
|
19,000,000
PLN
|
— |
| Other current liabilities |
326,000,000
PLN
|
359,000,000
PLN
|
376,000,000
PLN
|
— |
| Issued capital [abstract] | ||||
| Issued capital |
3,937,000,000
PLN
|
3,937,000,000
PLN
|
3,937,000,000
PLN
|
— |
| Retained earnings [abstract] | ||||
| Retained earnings |
5,951,000,000
PLN
|
5,875,000,000
PLN
|
5,790,000,000
PLN
|
— |
| Net assets (liabilities) [abstract] | ||||
| Assets |
24,300,000,000
PLN
|
24,922,000,000
PLN
|
25,259,000,000
PLN
|
— |
| Net current assets (liabilities) [abstract] | ||||
| Current assets |
3,363,000,000
PLN
|
3,493,000,000
PLN
|
3,969,000,000
PLN
|
— |
| Current liabilities |
7,637,000,000
PLN
|
4,191,000,000
PLN
|
6,285,000,000
PLN
|
— |
| Assets less current liabilities [abstract] |