Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 29, 2020	Dec. 29, 2019	Mar. 31, 2019
ASSETS
Accounts receivable, allowance for doubtful accounts	$ 16,900	$ 17,200	$ 12,100
Property, plant and equipment, accumulated depreciation	513,200	505,900	484,200
Other intangibles, accumulated amortization	$ 608,500	$ 895,200	$ 747,800
Preference stock, par value (in dollars per share)	$ 2.5	$ 2.5	$ 2.5
Preference stock, authorized shares (in shares)	5,000,000	5,000,000	5,000,000
Preference stock, issued (in shares)	0	0	0
Common stock, par value (in dollars per share)	$ 0.5	$ 0.5	$ 0.5
Common stock, authorized shares (in shares)	600,000,000	600,000,000	600,000,000
Common stock, issued (in shares)	220,286,736	220,286,736	209,694,630
Treasury stock (in shares)	83,279,734	83,424,129	83,830,809