Financial Instruments (Tables)

3 Months Ended

Apr. 02, 2017

Financial Instruments (Thousands of Dollars) [Abstract]

Schedule of Long-term Debt Instruments

	April 2, 2017				March 27, 2016				December 25, 2016
	Carrying		Fair		Carrying		Fair		Carrying		Fair
	Cost		Value		Cost		Value		Cost		Value
6.35% Notes Due 2040	$	500,000		597,150		500,000		560,900		500,000		584,850
6.30% Notes Due 2017		350,000		357,385		350,000		370,965		350,000		361,900
5.10% Notes Due 2044		300,000		306,570		300,000		287,610		300,000		297,600
3.15% Notes Due 2021		300,000		305,490		300,000		302,880		300,000		300,450
6.60% Debentures Due 2028		109,895		125,390		109,895		122,456		109,895		123,984
Total long-term debt	$	1,559,895		1,691,985		1,559,895		1,644,811		1,559,895		1,668,784
Less: Current portion		350,000		357,385		-		-		350,000		361,900
Less: Deferred debt expenses		10,999		-		12,461		-		11,216		-
Long-term debt	$	1,198,896		1,334,600		1,547,434		1,644,811		1,198,679		1,306,884