Financial Instruments (Tables)

6 Months Ended

Jul. 01, 2018

Financial Instruments (Thousands of Dollars) [Abstract]

Schedule of Long-term Debt Instruments

	July 1, 2018				July 2, 2017				December 31, 2017
	Carrying		Fair		Carrying		Fair		Carrying		Fair
	Cost		Value		Cost		Value		Cost		Value
6.35% Notes Due 2040	$	500,000		557,250		500,000		614,800		500,000		601,800
3.50% Notes Due 2027		500,000		464,600		-		-		500,000		488,300
6.30% Notes Due 2017		-		-		350,000		353,115		-		-
5.10% Notes Due 2044		300,000		287,730		300,000		325,500		300,000		313,320
3.15% Notes Due 2021		300,000		297,960		300,000		307,230		300,000		302,640
6.60% Debentures Due 2028		109,895		127,094		109,895		127,940		109,895		131,390
Total long-term debt	$	1,709,895		1,734,634		1,559,895		1,728,585		1,709,895		1,837,450
Less: Current portion		-		-		350,000		353,115		-		-
Less: Deferred debt expenses		15,545		-		10,781		-		16,286		-
Long-term debt	$	1,694,350		1,734,634		1,199,114		1,375,470		1,693,609		1,837,450