The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2025-01-01
-Paragraph 134
-Subparagraph d
-Clause v
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_134_d_v&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2025-01-01
-Paragraph 134
-Subparagraph e
-Clause v
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_134_e_v&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 254
-Subparagraph d
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_d_iii&doctype=Standard
-URIDate 2025-03-27

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 254
-Subparagraph f
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_f_ii&doctype=Standard
-URIDate 2025-03-27

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 254
-Subparagraph d
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_d_iii&doctype=Standard
-URIDate 2025-03-27

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 254
-Subparagraph f
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_254_f_ii&doctype=Standard
-URIDate 2025-03-27

Intangible assets - Additional information (Detail)	12 Months Ended
Intangible assets - Additional information (Detail)	Dec. 31, 2025 EUR (€)	Dec. 31, 2024 EUR (€)	Dec. 31, 2023 EUR (€)
Intangible assets [Line Items]
Impairment loss recognised in profit or loss, goodwill	€ 0	€ 0	€ 1,548,000,000
Goodwill	€ 1,808,000,000	143,000,000
Discount Rate Sensitivity Range	1
Growth Rate Sensitivity Range	1
Cash Flow Projection Sensitivity Range	5
Discount Rate Sensitivity Analysis	1
Perpetual Growth Rate Sensitivity Analysis	1
Cash Flow Sensitivity Analysis	5
Intangible assets pledged as security for liabilities	€ 0	0
Transaction rate of goodwill	1,160,200
Intelsat [Member]
Intangible assets [Line Items]
Goodwill	1,679,000,000	1,700,000,000
Orbital Slot licence Rights [Member]
Intangible assets [Line Items]
Impairment loss (reversal of impairment loss) recognised in profit or loss	73,000,000	93,000,000
Impairment loss recognised in profit or loss	99,000,000	93,000,000
Offsetting rights [Member]
Intangible assets [Line Items]
Impairment loss (reversal of impairment loss) recognised in profit or loss	€ 26,000,000	€ 186,000,000
Cash Generating Units [Member]
Intangible assets [Line Items]
Growth rate used to extrapolate cash flow projections	(1.60%)
Discount rate applied to cash flow projections	8.45%
Cash Generating Units [Member] \| Bottom of range [member]
Intangible assets [Line Items]
Growth rate used to extrapolate cash flow projections			3.00%
Discount rate applied to cash flow projections			6.83%
Cash Generating Units [Member] \| Top of range [member]
Intangible assets [Line Items]
Growth rate used to extrapolate cash flow projections			(5.20%)
Discount rate applied to cash flow projections			8.57%
GEO CGU [Member]
Intangible assets [Line Items]
Growth rate used to extrapolate cash flow projections		(2.00%)
Discount rate applied to cash flow projections		8.07%
MEO CGU [Member]
Intangible assets [Line Items]
Growth rate used to extrapolate cash flow projections		(3.80%)
Discount rate applied to cash flow projections		8.89%