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Unusual Items
 12 Months Ended
Dec. 31, 2021
Unusual or Infrequent Items, or Both [Abstract]  
Unusual Items Unusual Items
The following table presents total unusual items in the consolidated statements of operations:
Year Ended December 31,
202120202019
(In millions)
Merger costs (component of other expense, net)$18.9 $7.7 $— 
Loss on debt10.5 — — 
Legal related matter (component of other expense, net)— 0.4 — 
Acquisition costs (component of other expense, net)— — 0.3 
            Total unusual items$29.4 $8.1 $0.3 
In 2021, the Company settled $154.1 million of its 2¼% Notes as a result of receiving conversion notices from the noteholders. The principal amount of $154.1 million was settled in cash and the conversion premium was settled in 2.9 million common shares. The Company incurred a pre-tax charge of $10.5 million in 2021, associated with the settlement of the 2¼% Notes.
In 2021 and 2020, the Company incurred costs associated with the Merger with Lockheed Martin. See Note 1(a) for additional information. The components of the Merger costs are as follows (in millions):
Year Ended December 31,
20212020
(In millions)
Legal$12.9 $3.9 
Consulting and other professional costs1.1 3.4 
Internal labor (including $4.4 million of recurring employee costs in 2021)
4.9 0.4 
            Total $18.9 $7.7