Stock Compensation (Tables)

3 Months Ended

Mar. 31, 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
(millions)	March 31, 2018		April 1, 2017
Pre-tax compensation expense	$	17	$	18
Related income tax benefit	$	4	$	6

Summary of Stock Option Activity

Quarter ended March 31, 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	(1	)	57
Forfeitures and expirations	—		—
Outstanding, end of period	16		$	65	6.9	$	52
Exercisable, end of period	11		$	63	5.9	$	52

Quarter ended April 1, 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	)	56
Forfeitures and expirations	—		—
Outstanding, end of period	16		$	64	7.2	$	147
Exercisable, end of period	11		$	60	6.3	$	140

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 quarter ended March 31, 2018:	18	%	6.6	2.82	%	3.00	%
Grants within the quarter ended April 1, 2017:	18	%	6.6	2.26	%	2.80	%

Maximum Future Value of Performance Shares

(millions)	March 31, 2018
2016 Award	$	17
2017 Award	$	15
2018 Award	$	24

Schedule of Restricted Stock Activity

ended March 31, 2018:

Employee restricted stock units	Shares (thousands)		Weighted-average grant-date fair value
Non-vested, beginning of year	1,673		$	65
Granted	635		64
Vested	(399	)	59
Forfeited	(44	)	67
Non-vested, end of period	1,865		$	66

Quarter ended April 1, 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	629		67
Vested	(25	)	55
Forfeited	(22	)	64
Non-vested, end of period	1,748		$	65