Mirion Technologies, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Narrative (Details)

Borrowings - Narrative (Details) € in Millions, $ in Millions		3 Months Ended		6 Months Ended			12 Months Ended
	Oct. 20, 2021 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 EUR (€)	Jun. 30, 2023 EUR (€)	Dec. 31, 2022 EUR (€)	May 31, 2019 USD ($)	May 31, 2019 CAD ($)
Debt Instrument [Line Items]
Fair market value of credit agreement		$ 691,100,000		$ 691,100,000			$ 803,200,000
Repayments of term loan				125,000,000
Debt instrument, overdraft facilities amount		0		0			0
Accounts receivable, held-for-sale		13,100,000		13,100,000			13,000,000		€ 12.0	€ 12.1
Other short-term borrowings		0		0			100,000
Loss on debt extinguishment		0	$ 0	2,600,000		$ 0
Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity		77,100,000		77,100,000			68,100,000		€ 70.8	€ 63.6
Proceeds from lines of credit				54,900,000	€ 50.4		46,300,000	€ 43.3
Restricted cash		$ 1,700,000		$ 1,700,000			1,500,000
Letter of Credit \| Minimum
Debt Instrument [Line Items]
Interest rate		0.50%		0.50%					0.50%
Letter of Credit \| Maximum
Debt Instrument [Line Items]
Interest rate		2.00%		2.00%					2.00%
2021 Credit Agreement \| Secured Debt
Debt Instrument [Line Items]
Loan amount	$ 830,000,000
2021 Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Loan amount	$ 90,000,000
Line of credit facility, unused capacity, commitment fee percentage	0.50%			0.50%	0.50%
Line of credit facility, stepdowns, commitment fee percentage	0.375%
Line of credit facility, commitment fee percentage	0.25%
Leverage ratio				7.00	7.00
Revolving credit facility of exceed revolving credit commitment, percentage				40.00%	40.00%
Loan term		5 years		5 years					5 years
Maximum borrowing capacity		$ 79,200,000		$ 79,200,000			80,600,000
Debt issuance costs				1,800,000
Amortization expense		$ 700,000		$ 4,200,000
2021 Credit Agreement \| Revolving Credit Facility \| Maximum \| SOFR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				2.75%	2.75%
2021 Credit Agreement \| Term Loan Facility
Debt Instrument [Line Items]
Loan term		7 years		7 years					7 years
Debt instrument, quarterly repayment, percentage		0.25%		0.25%					0.25%
Repayments of term loan				$ 127,100,000		$ 6,600,000
Term loan, amount outstanding		$ 694,600,000		694,600,000			$ 821,700,000
Debt issuance costs				$ 21,700,000
2021 Credit Agreement \| Term Loan Facility \| Adjusted SOFR
Debt Instrument [Line Items]
Interest rate		7.90%		7.90%			7.48%		7.90%	7.48%
2021 Credit Agreement \| Term Loan Facility \| Minimum \| SOFR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.50%	0.50%
2021 Credit Agreement \| Term Loan Facility \| Maximum \| SOFR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				2.75%	2.75%
2021 Credit Agreement \| Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 10,800,000		$ 10,800,000			$ 9,400,000
2019 Credit Facility \| Canadian Financial Institution
Debt Instrument [Line Items]
Loan amount											$ 1,300,000	$ 1.7
Interest rate											4.69%	4.69%