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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 28, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of stock-based compensation and related tax benefits recognized under all plans
Stock-based compensation and related tax benefits recognized under all plans were as follows:
 
 
Year Ended
 
 
December 28,
2018
 
December 29,
2017
 
December 30,
2016
 
 
(in millions)
Total stock-based compensation expense
 
$
44

 
$
43

 
$
35

Tax benefits recognized from stock-based compensation
 
11

 
17

 
14
Schedule of Monte Carlo simulation assumptions
The Monte Carlo simulation assumptions used for the periods presented were as follows:
 

Year Ended
 

December 28,
2018
 
December 29,
2017
 
December 30,
2016
Expected volatility

25.37
%
 
27.19
%
 
31.73
%
Risk free rate of return

2.35
%
 
1.53
%
 
1.01
%
Weighted average grant date stock price

$
65.00

 
$
53.73

 
$
46.54

The weighted average grant-date fair value and assumptions used to determine fair value of stock options granted for the periods presented were as follows:
 

Year Ended
 

December 28,
2018

December 29,
2017
 
December 30, 2016
(Grants after acquisition)
 
December 30, 2016
(Grants before acquisition)
Weighted average grant-date fair value

$
13.85


$
11.53


$
10.33

 
$
9.54

Expected term (in years)

4.7


4.7


4.7

 
4.8

Expected volatility

26.6
%

29.7
%

37.9
%
 
29.9
%
Risk-free interest rate

2.6
%

1.9
%

1.2
%
 
1.3
%
Dividend yield

2.0
%

2.5
%

2.7
%
 
2.5
%
Schedule of stock option activity
Stock option activity for each of the periods presented was as follows:
 
 
Shares of
stock under
stock options
 
Weighted
average
exercise price
 
Weighted
average
remaining
contractual
term
 
Aggregate
intrinsic value
 
 
(in millions)
 
 
 
(in years)
 
(in millions)
Outstanding at January 1, 2016
 
2.4

 
$
38.21

 
4.5
 
$
43

Options granted
 
0.6

 
43.56

 
 
 
 
Special dividend adjustments
 
0.9

 
 
 
 
 
 
Options forfeited or expired
 
(0.2
)
 
34.98

 
 
 
 
Options exercised
 
(0.4
)
 
34.11

 
 
 
5

Outstanding at December 30, 2016
 
3.3

 
$
29.77

 
4.1
 
$
70

Options granted
 
0.5

 
53.51

 
 
 
 
Options forfeited or expired
 
(0.2
)
 
35.72

 
 
 
 
Options exercised
 
(0.8
)
 
27.23

 
 
 
23

Outstanding at December 29, 2017
 
2.8

 
$
34.38

 
3.9
 
$
86

Options granted
 
0.4

 
63.75

 

 


Options forfeited or expired
 
(0.2
)
 
49.65

 

 


Options exercised
 
(0.6
)
 
30.40

 

 
24

Outstanding at December 28, 2018
 
2.4

 
39.41

 
3.8
 
36

Exercisable at December 28, 2018
 
1.4

 
$
31.72

 
2.8
 
$
29

Vested and expected to vest in the future as of December 28, 2018
 
2.4

 
$
39.15

 
3.7
 
$
36
Schedule of restricted stock units activity
Restricted stock units and awards activity for each of the periods presented was as follows:
 
 
Shares of stock
under stock
awards
 
Weighted
average grant-
date fair value
 
 
(in millions)
 
 
Unvested stock awards at January 1, 2016
 
2.3

 
$
38.97

Awards granted
 
1.5

 
41.45

Awards forfeited
 
(0.2
)
 
40.88

Awards vested
 
(1.1
)
 
38.91

Unvested stock awards at December 30, 2016
 
2.5

 
$
40.39

Awards granted
 
0.8

 
53.91

Awards forfeited
 
(0.3
)
 
45.89

Awards vested
 
(1.0
)
 
41.02

Unvested stock awards at December 29, 2017
 
2.0

 
$
44.96

Awards granted
 
0.6

 
64.05

Awards forfeited
 
(0.2
)
 
42.67

Awards vested
 
(0.4
)
 
44.60

Unvested stock awards at December 28, 2018
 
2.0

 
$
50.85
Schedule of performance-based stock award activity
Performance-based stock award activity for each of the periods presented was as follows:
 
 
Expected number
of shares of stock
to be issued under
performance-based
stock awards
 
Weighted
average grant-
date fair value
 
 
(in millions)
 
 
Unvested at January 1, 2016
 
0.2

 
$
43.35

Awards granted
 
0.2

 
45.62

Unvested at December 30, 2016
 
0.4

 
$
44.44

Awards granted
 
0.2

 
57.94

Awards vested
 
(0.1
)
 
42.85

Unvested at December 29, 2017
 
0.5

 
$
50.34

Awards granted
 
0.3

 
61.43

Awards forfeited
 
(0.1
)
 
61.81

Awards vested
 
(0.2
)
 
44.04

Unvested at December 28, 2018
 
0.5

 
$
57.36