Operating Segments and Related Disclosures (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Selected Financial Information for Each Reportable Segment

The following table presents selected financial information for each reportable segment:

	Year Ended December 31,
	2020		2019		2018
	(In millions)
Net Sales:
Aerospace and Defense	$	2,069.4	$	1,974.0	$	1,888.1
Real Estate	3.3		7.5		7.8
Total Net Sales	$	2,072.7	$	1,981.5	$	1,895.9
Segment Performance:
Aerospace and Defense	$	264.2	$	249.1	$	233.4
Environmental remediation provision adjustments	(2.7)		(1.9)		37.2
GAAP/CAS retirement benefits expense difference	14.7		22.4		(6.0)
Unusual items	(0.6)		(0.3)		—
Aerospace and Defense Total	275.6		269.3		264.6
Real Estate	(1.8)		2.1		2.8
Total Segment Performance	$	273.8	$	271.4	$	267.4
Reconciliation of segment performance to income before income taxes:
Segment performance	$	273.8	$	271.4	$	267.4
Interest expense	(30.1)		(35.7)		(34.4)
Interest income	6.3		15.5		10.0
Stock-based compensation	(31.4)		(27.3)		(20.5)
Corporate retirement benefits expense	(7.5)		(7.2)		(13.4)
Corporate and other	(23.4)		(24.8)		(20.3)
Unusual items	(7.5)		—		(0.2)
Income before income taxes	$	180.2	$	191.9	$	188.6
Aerospace and Defense	$	54.6	$	42.9	$	42.2
Real Estate	—		—		—
Corporate	—		—		1.0
Capital Expenditures	$	54.6	$	42.9	$	43.2
Aerospace and Defense	$	64.2	$	72.9	$	71.1
Real Estate	0.8		1.2		0.9
Corporate	0.3		0.4		0.3
Depreciation and Amortization	$	65.3	$	74.5	$	72.3

	As of December 31,
	2020		2019
	(In millions)
Assets:
Aerospace and Defense	$	1,484.9	$	1,515.1
Real Estate	133.9		132.8
Operating segment assets	1,618.8		1,647.9
Corporate	1,281.1		1,059.9
Total Assets	$	2,899.9	$	2,707.8