Stock Compensation (Tables)

9 Months Ended

Sep. 29, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Expense for Equity-Based Programs and Related Income Tax Benefits

	Quarter ended				Year-to-date period ended
(millions)	September 29, 2018		September 30, 2017		September 29, 2018		September 30, 2017
Pre-tax compensation expense	$	13	$	18	$	46	$	57
Related income tax benefit	$	3	$	7	$	11	$	21

Summary of Stock Option Activity

Year-to-date period ended September 29, 2018:

Employee and director stock options	Shares (millions)		Weighted- average exercise price		Weighted- average remaining contractual term (yrs.)	Aggregate intrinsic value (millions)
Outstanding, beginning of period	14		$	64
Granted	3		70
Exercised	(2	)	58
Forfeitures and expirations	(1	)	71
Outstanding, end of period	14		$	66	6.6	$	77
Exercisable, end of period	10		$	63	5.6	$	76

Year-to-date period ended September 30, 2017:

Employee and director stock options	Shares (millions)		Weighted- average exercise price		Weighted- average remaining contractual term (yrs.)	Aggregate intrinsic value (millions)
Outstanding, beginning of period	15		$	62
Granted	2		73
Exercised	(1	)	57
Forfeitures and expirations	(1	)	70
Outstanding, end of period	15		$	64	6.8	$	37
Exercisable, end of period	10		$	60	5.8	$	37

Schedule of Fair Value Assumptions

	Weighted- average expected volatility		Weighted- average expected term (years)	Weighted- average risk-free interest rate		Dividend yield
Grants within the year-to-date period ended September 29, 2018:	18	%	6.6	2.82	%	3.00	%
Grants within the year-to-date period ended September 30, 2017:	18	%	6.6	2.26	%	2.80	%

Maximum Future Value of Performance Shares

(millions)	September 29, 2018
2016 Award	$	18
2017 Award	$	15
2018 Award	$	25

Schedule of Restricted Stock Activity

Year-to-date period ended September 29, 2018:

Employee restricted stock units	Shares (thousands)		Weighted-average grant-date fair value
Non-vested, beginning of year	1,673		$	65
Granted	729		63
Vested	(451	)	59
Forfeited	(203	)	64
Non-vested, end of period	1,748		$	66

Year-to-date period ended September 30, 2017:

Employee restricted stock and restricted stock units	Shares (thousands)		Weighted-average grant-date fair value
Non-vested, beginning of year	1,166		$	63
Granted	666		67
Vested	(76	)	57
Forfeited	(125	)	65
Non-vested, end of period	1,631		$	65