Other Comprehensive Earnings (Loss), Changes in the components of accumulated other comprehensive loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
Accumulated Other Comprehensive (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	$ (239,425)	$ (194,570)
Adoption of ASU 2018-02	(21,503)
Other Comprehensive Earnings (Loss), Net of Tax, Total	(31,467)	(2,601)
Total accumulated other comprehensive earnings (loss), End of Period	(292,395)	(197,171)
Pension and Postretirement Amounts [Member]
Accumulated Other Comprehensive (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	(110,971)	(118,401)
Adoption of ASU 2018-02	(18,065)
Other Comprehensive Earnings (Loss), Net of Tax, Total	(24,238)	1,448
Total accumulated other comprehensive earnings (loss), End of Period	(153,274)	(116,953)
Gains (Losses) On Derivative Instruments [Member]
Accumulated Other Comprehensive (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	(32,827)	51,085
Adoption of ASU 2018-02	(3,660)
Other Comprehensive Earnings (Loss), Net of Tax, Total	(19,915)	(28,691)
Total accumulated other comprehensive earnings (loss), End of Period	(56,402)	22,394
Gains (Losses) On Derivative Instruments [Member] | Interest Rate Contract [Member]
Accumulated Other Comprehensive (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), End of Period	(20,356)
Gains (Losses) On Derivative Instruments [Member] | Foreign Exchange Forward [Member]
Accumulated Other Comprehensive (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), End of Period	(36,046)
Unrealized Holding Gains on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	1,034	1,424
Adoption of ASU 2018-02	222
Other Comprehensive Earnings (Loss), Net of Tax, Total	(143)	(31)
Total accumulated other comprehensive earnings (loss), End of Period	1,113	1,393
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive (Loss) [Line Items]
Total accumulated other comprehensive earnings (loss), Beginning of Year	(96,661)	(128,678)
Adoption of ASU 2018-02	0
Other Comprehensive Earnings (Loss), Net of Tax, Total	12,829	24,673
Total accumulated other comprehensive earnings (loss), End of Period	$ (83,832)	$ (104,005)