Business, Product and Geographical Area Information (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Schedule of net sales by end market segment applications

	Quarter Ended
	March 31,
	2020		2019
Net sales:
Aero/HS products	$	196.0	$	198.5
Automotive Extrusions	47.4		53.0
GE products	121.7		130.0
Other products	4.2		13.7
Total net sales	$	369.3	$	395.2
Timing of revenue recognition:
Products transferred at a point in time	$	215.6	$	223.3	1
Products transferred over time	153.7		171.9		1
Total net sales	$	369.3	$	395.2

Schedule of income taxes paid by geographical area

	Quarter Ended
	March 31,
	2020		2019
Income taxes paid:
Domestic	$	—	$	0.1
Foreign	0.1		0.8
Total income taxes paid	$	0.1	$	0.9