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Commitments, Contingent Liabilities and Other Matters - Large Power Projects in South Africa (Details) - USD ($) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Sep. 26, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Increase in loss from continuing operations before income taxes										$ (36.1)	$ (39.4)	$ 154.3
Reduction in revenues	$ (387.0)	$ (348.5)	$ (349.7)	$ (340.6)	$ (395.3)	$ (345.0)	$ (371.4)	$ (360.6)		(1,425.8)	(1,472.3)	(1,559.0)
Increase in costs of products sold										1,095.6	1,096.5	1,283.1
Operating income (loss)										54.8	55.0	(122.2)
South Africa
Loss Contingencies [Line Items]
Reduction in revenues										(56.9)	(105.4)	(54.2)
Large Power Projects | South Africa
Loss Contingencies [Line Items]
Revenue recognized	29.0									29.0
Large Power Projects | Revisions in estimates for large power projects | South Africa
Loss Contingencies [Line Items]
Increase in loss from continuing operations before income taxes												95.0
Reduction in revenues									$ 57.2			57.2
Increase in costs of products sold												37.8
Operating income (loss)									$ (95.0)
Reportable and other operating segments
Loss Contingencies [Line Items]
Operating income (loss)										124.9	142.8	38.8
Engineered Solutions segment
Loss Contingencies [Line Items]
Reduction in revenues										(654.5)	(736.4)	(797.6)
Engineered Solutions segment | Reportable and other operating segments
Loss Contingencies [Line Items]
Operating income (loss)										(12.6)	$ 17.3	$ (87.4)
Engineered Solutions segment | Reportable and other operating segments | Large Power Projects | Revisions in estimates for large power projects | South Africa
Loss Contingencies [Line Items]
Reduction in revenues	23.4		13.5							36.9
Increase in costs of products sold	6.5		9.4							15.9
Operating income (loss)	$ (29.9)		$ (22.9)							$ (52.8)

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