Revenue (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 26, 2019

Sep. 27, 2018

Sep. 26, 2019

Sep. 27, 2018

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Disaggregation of Revenue [Table Text Block]

Disaggregation of Revenue

The Company disaggregates revenue based on the method of measuring satisfaction of the performance obligation either over time or at a point in time, based upon major customer, and based upon the location where products and services are transferred to the customer. Additionally, the Company’s principal operating segments and related revenue are noted in Note 22, Segment Information.

The following tables show disaggregated revenues for the three and nine months ended September 26, 2019 and September 27, 2018:

	For the Three  Months Ended				For the Nine Months Ended
Revenue	September 26, 2019		September 27, 2018		September 26, 2019		September 27, 2018
Contracts with performance obligations satisfied over time	$	1,466.9	$	1,456.7	$	4,491.8	$	4,212.6
Contracts with performance obligations satisfied at a point in time	453.0		357.0		1,412.0		1,174.1
Total Revenue	$	1,919.9	$	1,813.7	$	5,903.8	$	5,386.7

The following table disaggregates revenue by major customer:

	For the Three  Months Ended				For the Nine Months Ended
Customer	September 26, 2019		September 27, 2018		September 26, 2019		September 27, 2018
Boeing	$	1,542.0	$	1,465.5	$	4,705.1	$	4,262.2
Airbus	284.1		263.8		934.0		869.0
Other	93.8		84.4		264.7		255.5
Total Revenue	$	1,919.9	$	1,813.7	$	5,903.8	$	5,386.7

The following table disaggregates revenue based upon the location where control of products are transferred to the customer:

	For the Three  Months Ended				For the Nine Months Ended
Location	September 26, 2019		September 27, 2018		September 26, 2019		September 27, 2018
United States	$	1,620.6	$	1,534.0	$	4,935.8	$	4,460.8
International
United Kingdom	177.4		184.4		577.6		574.1
Other	121.9		95.3		390.4		351.8
Total International	299.3		279.7		968.0		925.9
Total Revenue	$	1,919.9	$	1,813.7	$	5,903.8	$	5,386.7

Revenues

$ 1,919.9

$ 1,813.7

$ 5,903.8

$ 5,386.7

Remaining in Current Year [Member]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Revenue, Remaining Performance Obligation, Amount

1,728.6

1,728.6

2020 [Member]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Revenue, Remaining Performance Obligation, Amount

6,344.5

6,344.5

2021 [Member] [Member]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Revenue, Remaining Performance Obligation, Amount

5,933.8

5,933.8

2021 and after [Member]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Revenue, Remaining Performance Obligation, Amount

1,002.7

1,002.7

Transferred over Time [Member]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Revenues

1,466.9

1,456.7

4,491.8

4,212.6

Transferred at Point in Time [Member]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]

Revenues

$ 453.0

$ 357.0

$ 1,412.0

$ 1,174.1