Revenue from contracts with customer - Changes in Contract Assets and Liabilities (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Contract with Customer, Change in Assets and Liabilities [Roll Forward]
Contract Assets, Balance at beginning of the year	€ 164.6	€ 119.2
Transferred from contract assets to accounts receivables	(393.4)	(268.2)
Revenue recognized during the year ending in contract assets	116.5	199.7
Transfer between contract assets and liabilities	244.2	113.9
Contract Assets, Balance at end of the year	131.9	164.6
Contract Liabilities, Balance at beginning of the year	11,160.9	5,594.1
Revenue recognized that was included in contract liabilities	(6,326.6)	(3,767.0)
Changes as a result of cumulative catch-up adjustments arising from changes in estimates	(118.0)	39.7
Remaining performance obligations for which considerations have been received, or for which we have an unconditional right to consideration	12,790.4	9,180.2
Transfer between contract assets and liabilities	244.2	113.9
Contract Liabilities, Balance at end of the year	€ 17,750.9	€ 11,160.9

Contract With Customer Asset, Revenue Recognized During The Current Year

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- Definition

Contract with Customer, Asset, Transfer Between Contract Assets and Liabilities

+ References

No definition available.

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- Definition

Contract with Customer, Change in Assets and Liabilities [Roll Forward]

+ References

No definition available.

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- Definition

Contract with Customer, Liability, Consideration Becoming Unconditional

+ References

No definition available.

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- Definition

Contract with Customer, Liability, Transfer Between Contract Assets and Liabilities

+ References

No definition available.

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
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- Definition

Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from contract modification which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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