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Segment Information (Tables)
 12 Months Ended
Dec. 31, 2023
Segment Reporting [Abstract]  
Segment Information
The following table shows segment revenues and operating income for the twelve months ended December 31, 2023, 2022 and 2021:

Twelve Months Ended December 31, 2023Twelve Months Ended December 31, 2022Twelve Months Ended December 31, 2021
Segment Revenues   
Commercial$4,885.0 $4,068.4 $3,128.1 
Defense & Space789.0 649.8 585.0 
Aftermarket373.9 311.4 239.9 
$6,047.9 $5,029.6 $3,953.0 
Segment Operating (loss) income (1)
  
Commercial(2)
$66.0 $(82.9)$(220.6)
Defense & Space(3)
44.7 72.8 44.3 
Aftermarket(4)
82.4 58.5 50.3 
193.1 48.4 (126.0)
Corporate SG&A(281.9)(279.2)(279.9)
Research and development(45.4)(50.4)(53.3)
Total operating (loss) income$(134.2)$(281.2)$(459.2)

(1)Inclusive of forward losses, changes in estimate on loss programs and cumulative catch-up adjustments. These changes in estimates for the periods ended December 31, 2023, 2022, and 2021 are further detailed in Note 5, Changes in Estimates.
(2)The twelve months ended December 31, 2023 includes excess capacity costs of $177.3 related to temporary B737 MAX, A320 and A220 production schedule changes, costs of $8.1 related to temporary production pause, and $6.3 of restructuring costs. The twelve months ended December 31, 2022 includes the impact of $24.7 in relation to the suspension of activities in Russia, excess production capacity costs of $149.5 related to the temporary B737 MAX and A220 production schedule changes, abnormal costs of $9.6 for workforce adjustments as a result of COVID-19 production pause, net of a U.S. employee retention credit and U.K. government subsidies, $0.2 of restructuring costs, and a net offset of $25.7 related to AMJPP and other costs. The twelve months ended December 31, 2021 includes excess capacity production costs of $206.7 related to the temporary B737 MAX and A220 production schedule changes, abnormal costs of $12.0 for workforce adjustments as a result of COVID-19 production pause, net of U.S. employee retention credit and U.K. government subsidies, $6.8 of restructuring costs, and a $35.9 offset related to AMJPP.
(3)The twelve months ended December 31, 2023 includes excess capacity production costs of $6.8 related to the temporary B737 production schedule changes, costs of $0.2 related to temporary production pause, and $0.9 of restructuring costs. The twelve months ended December 31, 2022 includes excess capacity production costs of $7.8, $0.0 of restructuring costs, and a $2.3 offset related to AMJPP. The twelve months ended December 31, 2021 includes excess capacity costs of $10.8 related to the temporary B737 production schedule changes, $1.1 of restructuring costs, and a $3.0 offset related to AMJPP.
(4)The twelve months ended December 31, 2023 includes ($2.4) of benefit related to the settlement of a contingent consideration obligation related to the Applied Aerodynamics acquisition. The twelve months ended December 31, 2022 includes the impact of $4.4 in relation to the suspension of activities in Russia, $0.0 of restructuring costs, and a $1.9 offset related to AMJPP. The twelve months ended December 31, 2021 includes $0.3 of restructuring costs and a $2.2 offset related to AMJPP.
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] The following chart illustrates the split between domestic and foreign revenues:
 Year Ended December 31, 2023Year Ended December 31, 2022Year Ended December 31, 2021
Revenue Source(1)
Net RevenuesPercent of
Total
Net Revenues		Net RevenuesPercent of
Total
Net Revenues		Net RevenuesPercent of
Total
Net Revenues
United States$4,667.1 77 %$3,814.5 76 %$2,822.2 71 %
International 
United Kingdom582.5 10 %632.8 13 %580.4 15 %
Other798.3 13 %582.3 11 %550.4 14 %
Total International1,380.8 23 %1,215.1 24 %1,130.8 29 %
Total Revenues$6,047.9 100 %$5,029.6 100 %$3,953.0 100 %

(1)Net Revenues are attributable to countries based on destination where goods are delivered.

As of December 31, 2023, most of the Company’s property, plant and equipment are located within the U.S. Approximately 18% of the Company's property, plant and equipment based on book value are located in the U.K., with approximately another 5% of the Company's total property, plant and equipment located in countries outside the U.S. and the U.K. The following chart illustrates the split between domestic and foreign assets:

 Year Ended December 31, 2023Year Ended December 31, 2022Year Ended December 31, 2021
Asset LocationTotal
PPE		Percent of
PPE		Total
PPE		Percent of
Total
PPE		Total
PPE		Percent of
Total
PPE
United States$1,605.0 77 %$1,708.2 78 %$1,833.7 77 %
International 
United Kingdom384.0 18 %404.1 18 %451.3 19 %
Other95.2 5 %93.6 4 %100.5 4 %
Total International479.2 23 %497.7 22 %551.8 23 %
Total Property, Plant & Equipment$2,084.2 100 %$2,205.9 100 %$2,385.5 100 %
.