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Segment information and information by geographical area (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure Of Entitys Reportable Segments Explanatory [Line Items] |  |  |  |
Net sales to customers |  | € 75,822 | € 66,919 | € 55,762
Operating profit |  | 9,983 | 8,012 | 2,157
Net provisions for contingencies |  | 1,120 | 886 | 505
Depreciation and amortization |  | 6,988 | 7,483 | 7,559
Impairments of tangible and intangible assets |  |  | 862 | 1,067
Reversals of tangible and intangible assets |  | 866 | (225) | (475)
Write-off |  | 100 | 263 | 350
Share of profit (loss) of equity-accounted investments |  | (68) | (267) | (326)
Identifiable assets | [1] | 85,483 | 89,816 | 99,068
Unallocated Assets |  | 32,890 | 25,112 | 25,477
Equity-accounted investments |  | 7,044 | 3,511 | 4,040
Identifiable liabilities | [2] | 34,540 | 33,876 | 33,931
Unallocated liabilities |  | 32,760 | 32,973 | 37,528
Capital expenditure in tangible and intangible assets |  | 9,119 | 8,681 | 9,180
Exploration & Production [Member] |  |  |  |
Disclosure Of Entitys Reportable Segments Explanatory [Line Items] |  |  |  |
Net sales from operations | [3] | 25,744 | 19,525 | 16,089
Less: intersegment sales |  | (15,801) | (12,394) | (9,711)
Net sales to customers |  | 9,943 | 7,131 | 6,378
Operating profit |  | 10,214 | 7,651 | 2,567
Net provisions for contingencies |  | 235 | 479 | 123
Depreciation and amortization |  | 6,152 | 6,747 | 6,772
Impairments of tangible and intangible assets |  | 1,025 | 650 | 740
Reversals of tangible and intangible assets |  | 299 | 808 | 1,440
Write-off |  | 97 | 260 | 153
Share of profit (loss) of equity-accounted investments |  | 158 | (99) | (198)
Identifiable assets | [1] | 63,051 | 66,661 | 75,716
Equity-accounted investments |  | 4,972 | 1,234 | 1,626
Identifiable liabilities | [2] | 18,110 | 17,273 | 17,433
Capital expenditure in tangible and intangible assets |  | 7,901 | 7,739 | 8,254
Gas & Power [Member] |  |  |  |
Disclosure Of Entitys Reportable Segments Explanatory [Line Items] |  |  |  |
Net sales from operations | [3] | 55,690 | 50,623 | 40,961
Less: intersegment sales |  | (12,581) | (10,777) | (8,898)
Net sales to customers |  | 43,109 | 39,846 | 32,063
Operating profit |  | 629 | 75 | (391)
Net provisions for contingencies |  | 53 | (20) | 50
Depreciation and amortization |  | 408 | 345 | 354
Impairments of tangible and intangible assets |  | 56 | 56 | 167
Reversals of tangible and intangible assets |  | 127 | 202 | 86
Write-off |  | 1 | 2 | 2
Share of profit (loss) of equity-accounted investments |  | 9 | (10) | 19
Identifiable assets | [1] | 9,989 | 11,058 | 12,014
Equity-accounted investments |  | 494 | 509 | 592
Identifiable liabilities | [2] | 8,314 | 8,851 | 8,923
Capital expenditure in tangible and intangible assets |  | 215 | 142 | 120
Refining & Marketing and Chemical [Member] |  |  |  |
Disclosure Of Entitys Reportable Segments Explanatory [Line Items] |  |  |  |
Net sales from operations | [3] | 25,216 | 22,107 | 18,733
Less: intersegment sales |  | (2,622) | (2,336) | (1,605)
Net sales to customers |  | 22,594 | 19,771 | 17,128
Operating profit |  | (380) | 981 | 723
Net provisions for contingencies |  | 274 | 182 | 171
Depreciation and amortization |  | 399 | 360 | 389
Impairments of tangible and intangible assets |  | 193 | 131 | 120
Reversals of tangible and intangible assets |  |  | 77 | 16
Write-off |  | 2 | 1 | 195
Share of profit (loss) of equity-accounted investments |  | (67) | (57) | (3)
Identifiable assets | [1] | 11,692 | 11,599 | 10,712
Equity-accounted investments |  | 275 | 321 | 289
Identifiable liabilities | [2] | 4,319 | 4,005 | 3,968
Capital expenditure in tangible and intangible assets |  | 877 | 729 | 664
Corporate and other activities [Member] |  |  |  |
Disclosure Of Entitys Reportable Segments Explanatory [Line Items] |  |  |  |
Net sales from operations | [3] | 1,589 | 1,462 | 1,343
Less: intersegment sales |  | (1,413) | (1,291) | (1,150)
Net sales to customers |  | 176 | 171 | 193
Operating profit |  | (691) | (668) | (681)
Net provisions for contingencies |  | 579 | 245 | 438
Depreciation and amortization |  | 59 | 60 | 72
Impairments of tangible and intangible assets |  | 18 | 25 | 40
Share of profit (loss) of equity-accounted investments |  | (168) | (101) | (144)
Identifiable assets | [1] | 1,171 | 1,108 | 1,146
Equity-accounted investments |  | 1,303 | 1,447 | 1,533
Identifiable liabilities | [2] | 4,072 | 4,053 | 3,939
Capital expenditure in tangible and intangible assets |  | 143 | 87 | 55
Adjustments of intragroup profits [Member] |  |  |  |
Disclosure Of Entitys Reportable Segments Explanatory [Line Items] |  |  |  |
Operating profit |  | 211 | (27) | (61)
Net provisions for contingencies |  | (21) |  | (277)
Depreciation and amortization |  | (30) | (29) | (28)
Identifiable assets | [1] | (420) | (610) | (520)
Identifiable liabilities | [2] | (275) | (306) | (332)
Capital expenditure in tangible and intangible assets |  | € (17) | € (16) | € 87
[1] | Includes assets directly associated with the generation of operating profit.
[2] | Includes liabilities directly associated with the generation of operating profit.
[3] | Before elimination of intersegment sales.

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