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Unfulfilled Performance Obligations (Notes)	3 Months Ended
Unfulfilled Performance Obligations (Notes)	Mar. 29, 2019
Unfulfilled Performance Obligations [Abstract]
Unfulfilled Performance Obligations [Text Block]	10. UNFULFILLED PERFORMANCE OBLIGATIONS Unfulfilled performance obligations ("backlog") represents the transaction price of firm orders for which work has not been performed and excludes unexercised contract options and potential orders under ordering-type contracts. As of March 29, 2019, the aggregate amount of the transaction price allocated to backlog was $949.3 million. The Company expects to recognize revenue on approximately $699.7 million of this amount over the next 12 months, with the remaining amount to be recognized thereafter. At December 31, 2018, the aggregate amount of the transaction price allocated to backlog was $986.1 million.