Subsequent Events	3 Months Ended
Mar. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	18) Subsequent Events Atotech On July 1, 2021, the Company entered into a definitive agreement with Atotech (as amended from time to time, the "Implementation Agreement") to acquire Atotech, a leading process chemicals technology company and a market leader in advanced electroplating solutions. Pursuant to the Implementation Agreement, the Company agreed to pay $16.20 per share in cash and 0.0552 of a share of MKS common stock for each outstanding common share of Atotech (the "Atotech Acquisition"). At the time of the announcement of the Atotech Acquisition, the total value of the aggregate cash and stock consideration was approximately $5,100. The final value of the consideration will be determined at the time of the closing of the Atotech Acquisition, which is subject to the satisfaction of certain closing conditions, including receipt of regulatory approval from China and approval by the Royal Court of Jersey. The Company's obligation to complete the Atotech Acquisition is not subject to any financing condition. The Company intends to fund the cash portion of the transaction with a combination of available cash on hand and committed term loan debt financing. In connection with entering into the Implementation Agreement, the Company entered into (a) a debt commitment letter, dated as of July 1, 2021, with JPMorgan Chase Bank, N.A. and Barclays Bank PLC (the "Commitment Parties") and (b) joinders to such commitment letter to add certain additional lender parties (together with the Commitment Parties, the "2021 Commitment Parties") dated as of July 23, 2021 ((a) and (b) together, the "2021 Commitment Letter"), pursuant to which, subject to the terms and conditions set forth therein, the 2021 Commitment Parties committed to provide (i) a senior secured term loan credit facility in an aggregate principal amount of $5,300, which would refinance the Term Loan Facility and be used to finance a portion of the Atotech Acquisition and refinance certain existing indebtedness of Atotech and (ii) a senior secured revolving credit facility with aggregate total commitments of $500, which would refinance the ABL Facility. On April 1, 2022, the Company entered into an amendment to the Implementation Agreement (the "Amendment"), providing for additional time for the satisfaction of certain closing conditions set forth in the Implementation Agreement, including approval of the Atotech Acquisition by the Royal Court of Jersey and receipt of regulatory approvals ("Clearances"), such that the Long Stop Date (as defined in the Implementation Agreement) was extended from March 31, 2022 to September 30, 2022. In addition, the Amendment amends certain provisions related to obtaining the Clearances, the timing of the closing date and the obligations of the parties with respect to the debt financing contemplated in connection with the Atotech Acquisition and provides for the automatic termination of the Implementation Agreement if the closing has not occurred by the Long Stop Date. In connection with the Amendment, the Company terminated the 2021 Commitment Letter and entered into (a) a new debt commitment letter, dated as of April 1, 2022, with the Commitment Parties and (b) joinders to such commitment letter to add certain additional lender parties (together with the Commitment Parties, the "2022 Commitment Parties") dated as of April 4, 2022 ((a) and (b) together, the "2022 Commitment Letter"), pursuant to which, among other things, the 2022 Commitment Parties committed to provide the Company with (i) a senior secured term loan B credit facility consisting of a $4,250 term loan B and (ii) a senior secured term loan A credit facility consisting of a $1,000 term loan A ((i) and (ii) together, the "2022 New Term Loan Facilities") and (iii) a senior secured revolving credit facility with aggregate total commitments of $500 (the "2022 New Revolving Credit Facility"). The 2022 New Term Loan Facilities and the 2022 New Revolving Credit Facility would refinance the Term Loan Facility and the ABL Facility, respectively, be used to finance a portion of the Atotech Acquisition, to refinance certain existing indebtedness of Atotech, to pay fees and expenses in connection with the Atotech Acquisition, and, in the case of the 2022 New Revolving Credit Facility, be used for working capital and for general corporate purposes. On April 11, 2022, in connection with the 2022 Commitment Letter, the Company completed the syndication of the 2022 New Term Loan Facilities, comprised of (i) two tranches of term loan B: a tranche of $3,600 at the secured overnight financing rate ("SOFR") plus 2.75%, a floor of 0.50% and 2.0% of original issue discount ("OID"), and a Euro tranche of EUR 600 at EURIBOR plus 3.00%, a floor of 0.00% and 2.00% of OID; and (ii) a $1,000 term loan A at SOFR plus 2.50%, a floor of 0.00% and 0.25% of OID. The 2022 Commitment Parties' obligations under the 2022 Commitment Letter and the closing and initial funding under the 2022 New Term Loan Facilities and the 2022 New Revolving Credit Facility are subject to certain customary conditions including, without limitation, the consummation of the Atotech Acquisition in accordance with the Implementation Agreement, the accuracy of specified representations and warranties of the Company and other customary closing conditions. Real Property Purchase Agreement The Company entered into a real property purchase agreement for building and land in South Korea and completed the purchase on May 2, 2022 for 51 billion Korean won or approximately $40 million. The Company previously leased a portion of the property, which the Company uses for sales, customer support, service and research and development.

Subsequent Events

3 Months Ended

Mar. 31, 2022

18) Subsequent Events

Atotech

On July 1, 2021, the Company entered into a definitive agreement with Atotech (as amended from time to time, the "Implementation Agreement") to acquire Atotech, a leading process chemicals technology company and a market leader in advanced electroplating solutions. Pursuant to the Implementation Agreement, the Company agreed to pay $16.20 per share in cash and 0.0552 of a share of MKS common stock for each outstanding common share of Atotech (the "Atotech Acquisition"). At the time of the announcement of the Atotech Acquisition, the total value of the aggregate cash and stock consideration was approximately $5,100. The final value of the consideration will be determined at the time of the closing of the Atotech Acquisition, which is subject to the satisfaction of certain closing conditions, including receipt of regulatory approval from China and approval by the Royal Court of Jersey. The Company's obligation to complete the Atotech Acquisition is not subject to any financing condition. The Company intends to fund the cash portion of the transaction with a combination of available cash on hand and committed term loan debt financing.

In connection with entering into the Implementation Agreement, the Company entered into (a) a debt commitment letter, dated as of July 1, 2021, with JPMorgan Chase Bank, N.A. and Barclays Bank PLC (the "Commitment Parties") and (b) joinders to such commitment letter to add certain additional lender parties (together with the Commitment Parties, the "2021 Commitment Parties") dated as of July 23, 2021 ((a) and (b) together, the "2021 Commitment Letter"), pursuant to which, subject to the terms and conditions set forth therein, the 2021 Commitment Parties committed to provide (i) a senior secured term loan credit facility in an aggregate principal amount of $5,300, which would refinance the Term Loan Facility and be used to finance a portion of the Atotech Acquisition and refinance certain existing indebtedness of Atotech and (ii) a senior secured revolving credit facility with aggregate total commitments of $500, which would refinance the ABL Facility.

On April 1, 2022, the Company entered into an amendment to the Implementation Agreement (the "Amendment"), providing for additional time for the satisfaction of certain closing conditions set forth in the Implementation Agreement, including approval of the Atotech Acquisition by the Royal Court of Jersey and receipt of regulatory approvals ("Clearances"), such that the Long Stop Date (as defined in the Implementation Agreement) was extended from March 31, 2022 to September 30, 2022.

In addition, the Amendment amends certain provisions related to obtaining the Clearances, the timing of the closing date and the obligations of the parties with respect to the debt financing contemplated in connection with the Atotech Acquisition and provides for the automatic termination of the Implementation Agreement if the closing has not occurred by the Long Stop Date.

In connection with the Amendment, the Company terminated the 2021 Commitment Letter and entered into (a) a new debt commitment letter, dated as of April 1, 2022, with the Commitment Parties and (b) joinders to such commitment letter to add certain additional lender parties (together with the Commitment Parties, the "2022 Commitment Parties") dated as of April 4, 2022 ((a) and (b) together, the "2022 Commitment Letter"), pursuant to which, among other things, the 2022 Commitment Parties committed to provide the Company with (i) a senior secured term loan B credit facility consisting of a $4,250 term loan B and (ii) a senior secured term loan A credit facility consisting of a $1,000 term loan A ((i) and (ii) together, the "2022 New Term Loan Facilities") and (iii) a senior secured revolving credit facility with aggregate total commitments of $500 (the "2022 New Revolving Credit Facility"). The 2022 New Term Loan Facilities and the 2022 New Revolving Credit Facility would refinance the Term Loan Facility and the ABL Facility, respectively, be used to finance a portion of the Atotech Acquisition, to refinance certain existing indebtedness of Atotech, to pay fees and expenses in connection with the Atotech Acquisition, and, in the case of the 2022 New Revolving Credit Facility, be used for working capital and for general corporate purposes.

On April 11, 2022, in connection with the 2022 Commitment Letter, the Company completed the syndication of the 2022 New Term Loan Facilities, comprised of (i) two tranches of term loan B: a tranche of $3,600 at the secured overnight financing rate ("SOFR") plus 2.75%, a floor of 0.50% and 2.0% of original issue discount ("OID"), and a Euro tranche of EUR 600 at EURIBOR plus 3.00%, a floor of 0.00% and 2.00% of OID; and (ii) a $1,000 term loan A at SOFR plus 2.50%, a floor of 0.00% and 0.25% of OID.

The 2022 Commitment Parties' obligations under the 2022 Commitment Letter and the closing and initial funding under the 2022 New Term Loan Facilities and the 2022 New Revolving Credit Facility are subject to certain customary conditions including, without limitation, the consummation of the Atotech Acquisition in accordance with the Implementation Agreement, the accuracy of specified representations and warranties of the Company and other customary closing conditions.

Real Property Purchase Agreement

The Company entered into a real property purchase agreement for building and land in South Korea and completed the purchase on May 2, 2022 for 51 billion Korean won or approximately $40 million. The Company previously leased a portion of the property, which the Company uses for sales, customer support, service and research and development.