Employees' Stock Incentive Plans Schedule of PSU Activity and Related Information (Details) - PSUs	3 Months Ended
	Mar. 28, 2020 $ / shares shares
Roll-forward of PSU Activity (in shares)
Beginning balance (in shares) | shares	6,813,659
Granted (in shares) | shares	191,792
Forfeited (in shares) | shares	(358,356)
Ending balance (in shares) | shares	6,647,095
Weighted Average Grant Date Fair Value [Abstract]
Outstanding at period start, weighted average grant date fair value (in dollars per share) | $ / shares	$ 36.03
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	22.56
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	56.63
Outstanding at period end, weighted average grant date fair value (in dollars per share) | $ / shares	$ 34.53