Pension and Postretirement Benefits - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation, excess in plan assets	$ 19,000		$ 19,000
Unrecognized losses, U.S. pension plan, remaining in accumulated other comprehensive loss	32,115		32,115
Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Non-operating settlement charge	$ 0	$ 0	110,777	$ 0
Contributions to defined benefit pension plans			1,880
Expected fiscal year defined benefit pension plan contributions			$ 2,100

Expected fiscal year defined benefit pension plan contributions.

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Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement.

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