XML 495 R66.htm IDEA: XBRL DOCUMENT v3.20.4

SHARE-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2020

Share-based payment arrangements [Abstract]

Schedule of Inputs to the Model Used for PSUs Granted

The following table lists the inputs to the valuation model used for the PSUs granted in 2020 and 2019:

						April 2020 PSUs						May 2019 PSUs
Fair value at grant date (in euros)						6.65						10.44
Share price at grant date (in euros)						4.64						7.1
Dividend yield						—						—
Expected volatility (A)						63		%				52		%
Risk-free interest rate (US government bond yield)						0.36		%				2.29		%
Model used						Monte Carlo						Monte Carlo

(A)Volatilities for the Company and companies included in indices were estimated based on observed historical volatilities over a period equal to the PSU vesting period.

Schedule of Number and Movement of Potential Shares

The following table illustrates the number and movements in potential shares:

						Performance-Based RSU												Restricted Stock Units												Equity Award Plans
						Potential Shares						Weighted-Average Grant-Date Fair Value per Share						Potential Shares						Weighted-Average Grant-Date Fair Value per Share						Potential Shares						Weighted-Average Grant-Date Fair Value per Share
At January 1, 2019						3,085,164						€	10.45					1,312,524						€	8.47					57,913						€	8.31
Granted						1,028,342						€	10.44					899,926						€	7.10					73,799						€	8.39
Over-performance						248,230						€	8.94					—						€	—					—						€	—
Vested						(1,758,062)						€	7.97					(106,000)						€	4.55					(42,559)						€	7.60
Forfeited						(84,380)						€	8.02					(39,947)						€	8.31					(9,627)						€	8.71
At December 31, 2019						2,519,294						€	12.11					2,066,503						€	8.08					79,526						€	8.71
Granted (A)						1,049,839						€	6.65					910,047						€	4.64					—						€	—
Over-performance (B)						677,944						€	11.52					—						€	—					—						€	—
Vested						(1,458,985)						€	11.52					(589,655)						€	7.50					(46,614)						€	8.94
Forfeited (C)						(193,765)						€	10.94					(154,984)						€	7.37					—						€	—
At December 31, 2020						2,594,327						€	10.17					2,231,911						€	6.88					32,912						€	8.39

(A)For PSUs, the number of potential shares granted is presented using a vesting multiplier of 100%.

(B)When the achievement of TSR performance exceeds the vesting multiplier of 100%, the additional potential shares are presented as over-performance shares.

(C)For potential shares related to PSUs, 193,765 were forfeited following the departure of certain beneficiaries and none were forfeited in relation to the non-fulfilment of performance conditions.

X

- Definition

Disclosure of number of other equity instruments.

+ References

No definition available.

+ Details

Name:	cstm_DisclosureOfNumberOfOtherEquityInstrumentsTableTextBlock
Namespace Prefix:	cstm_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share-based payment arrangements

+ References

No definition available.

+ Details

Name:	cstm_SharebasedpaymentarrangementsAbstract
Namespace Prefix:	cstm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The disclosure of information about indirect, by reference to the fair value of the equity instruments granted, measurement of the fair value of goods or services received as consideration for the entity's other equity instruments (ie other than share options).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2020-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedOtherEquityInstrumentsGrantedDuringPeriodExplanatory
Namespace Prefix:	ifrs-full_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration