Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The carrying costs, which are equal to the outstanding principal amounts, and fair values of the Company's long-term borrowings as of June 30, 2019, July 1, 2018 and December 30, 2018 are as follows:

	June 30, 2019			July 1, 2018		December 30, 2018
	Carrying Cost		Fair Value	Carrying Cost	Fair Value	Carrying Cost	Fair Value
6.35% Notes Due 2040	$	500,000	591,850	500,000	557,250	500,000	535,000
3.50% Notes Due 2027	500,000		507,200	500,000	464,600	500,000	457,350
5.10% Notes Due 2044	300,000		310,860	300,000	287,730	300,000	272,640
3.15% Notes Due 2021	300,000		303,900	300,000	297,960	300,000	297,600
6.60% Debentures Due 2028	109,895		132,984	109,895	127,094	109,895	123,346
Total long-term debt	$	1,709,895	1,846,794	1,709,895	1,734,634	1,709,895	1,685,936
Less: Deferred debt expenses	14,062		—	15,545	—	14,803	—
Long-term debt	$	1,695,833	1,846,794	1,694,350	1,734,634	1,695,092	1,685,936