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Provisions for employee benefits - Maturity analysis (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Statement |  |
Net benefit liability (asset) | € 1,201 | € 1,136
Other benefit plans |  |
Statement |  |
Net benefit liability (asset) | € 268 | € 278
Other benefit plans | Average |  |
Statement |  |
Weighted average duration of benefit obligation | 2 years 9 months 18 days | 3 years
Other benefit plans | within 1 year |  |
Statement |  |
Net benefit liability (asset) | € 71 | € 73
Other benefit plans | Later than one year and not later than two years |  |
Statement |  |
Net benefit liability (asset) | 66 | 68
Other benefit plans | Later than two years and not later than three years |  |
Statement |  |
Net benefit liability (asset) | 63 | 61
Other benefit plans | Later than three years and not later than four years |  |
Statement |  |
Net benefit liability (asset) | 16 | 17
Other benefit plans | Later than four years and not later than five years |  |
Statement |  |
Net benefit liability (asset) | 12 | 14
Other benefit plans | beyond 5 years |  |
Statement |  |
Net benefit liability (asset) | 40 | 45
Italian defined benefit plans |  |
Statement |  |
Net defined benefit liability (asset) | € 258 | € 269
Italian defined benefit plans | Average |  |
Statement |  |
Weighted average duration of defined benefit obligation | 8 years 2 months 12 days | 9 years 4 months 24 days
Italian defined benefit plans | within 1 year |  |
Statement |  |
Net defined benefit liability (asset) | € 12 | € 17
Italian defined benefit plans | Later than one year and not later than two years |  |
Statement |  |
Net defined benefit liability (asset) | 13 | 16
Italian defined benefit plans | Later than two years and not later than three years |  |
Statement |  |
Net defined benefit liability (asset) | 17 | 12
Italian defined benefit plans | Later than three years and not later than four years |  |
Statement |  |
Net defined benefit liability (asset) | 20 | 10
Italian defined benefit plans | Later than four years and not later than five years |  |
Statement |  |
Net defined benefit liability (asset) | 21 | 15
Italian defined benefit plans | beyond 5 years |  |
Statement |  |
Net defined benefit liability (asset) | 175 | 199
Foreign defined benefit plan |  |
Statement |  |
Net defined benefit liability (asset) | € 493 | € 412
Foreign defined benefit plan | Average |  |
Statement |  |
Weighted average duration of defined benefit obligation | 19 years 1 month 6 days | 18 years 1 month 6 days
Foreign defined benefit plan | within 1 year |  |
Statement |  |
Net defined benefit liability (asset) | € 44 | € 33
Foreign defined benefit plan | Later than one year and not later than two years |  |
Statement |  |
Net defined benefit liability (asset) | 42 | 35
Foreign defined benefit plan | Later than two years and not later than three years |  |
Statement |  |
Net defined benefit liability (asset) | 50 | 32
Foreign defined benefit plan | Later than three years and not later than four years |  |
Statement |  |
Net defined benefit liability (asset) | 63 | 39
Foreign defined benefit plan | Later than four years and not later than five years |  |
Statement |  |
Net defined benefit liability (asset) | 67 | 49
Foreign defined benefit plan | beyond 5 years |  |
Statement |  |
Net defined benefit liability (asset) | 227 | 224
FISDE and other foreign medical plans |  |
Statement |  |
Net defined benefit liability (asset) | € 182 | € 177
FISDE and other foreign medical plans | Average |  |
Statement |  |
Weighted average duration of defined benefit obligation | 13 years 8 months 12 days | 13 years 3 months 18 days
FISDE and other foreign medical plans | within 1 year |  |
Statement |  |
Net defined benefit liability (asset) | € 8 | € 9
FISDE and other foreign medical plans | Later than one year and not later than two years |  |
Statement |  |
Net defined benefit liability (asset) | 7 | 8
FISDE and other foreign medical plans | Later than two years and not later than three years |  |
Statement |  |
Net defined benefit liability (asset) | 7 | 7
FISDE and other foreign medical plans | Later than three years and not later than four years |  |
Statement |  |
Net defined benefit liability (asset) | 7 | 7
FISDE and other foreign medical plans | Later than four years and not later than five years |  |
Statement |  |
Net defined benefit liability (asset) | 7 | 7
FISDE and other foreign medical plans | beyond 5 years |  |
Statement |  |
Net defined benefit liability (asset) | € 146 | € 139

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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 140 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_140_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The weighted average duration of a defined benefit obligation. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 147 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_147_c&doctype=Standard -URIDate 2020-01-01 + Details
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