Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2016

Stockholders' Equity Note [Abstract]

Dividends Declared

The dividends charged to retained earnings in fiscal 2016 and 2015 were as follows (in millions except per share amounts):

	Fiscal Years Ended
	September 30, 2016				October 2, 2015
	Per Share		Total		Per Share		Total
First quarter	$	0.26	$	49.8	$	0.13	$	24.7
Second quarter	0.26		49.3		0.13		24.9
Third quarter	0.26		49.5		0.13		24.8
Fourth quarter	0.28		52.2		0.26		49.6
	$	1.06	$	200.8	$	0.65	$	124.0

Schedule of Share-based Compensation, Stock Options, Activity

The following table represents a summary of the Company’s stock options:

	Shares (in millions)		Weighted average exercise price		Weighted average remaining contractual life (in years)	Aggregate intrinsic value (in millions)
Balance outstanding at October 2, 2015	5.4		$	30.08
Granted	0.8		$	82.36
Exercised	(1.3	)	$	21.14
Canceled/forfeited	(0.1	)	$	45.49
Balance outstanding at September 30, 2016	4.8		$	41.35	3.9	$	174.0
Exercisable at September 30, 2016	2.1		$	25.00	2.6	$	108.3

Schedule of Other Share-based Compensation, Activity

The following table represents a summary of the Company’s restricted and performance awards and units:

	Shares (In millions)		Weighted average     grant date fair value
Non-vested awards outstanding at October 2, 2015	4.8		$	23.20
Granted (1)	1.3		$	84.89
Vested	(2.4	)	$	33.81
Canceled/forfeited	(0.1	)	$	25.73
Non-vested awards outstanding at September 30, 2016	3.6		$	25.01
(1) includes performance shares granted and earned based on maximum performance under the underlying performance metrics

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value

The following table summarizes the total intrinsic value for stock options exercised and awards vested (in millions):

	Fiscal Years Ended
	September 30, 2016		October 2, 2015		October 3, 2014
Options	$	68.9	$	170.8	$	101.3
Awards	$	197.6	$	149.0	$	63.1

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The following table summarizes pre-tax share-based compensation expense by financial statement line and related tax benefit (in millions):

	Fiscal Years Ended
	September 30, 2016		October 2, 2015		October 3, 2014
Cost of goods sold	$	11.3	$	14.5	$	11.3
Research and development	32.2		45.4		36.2
Selling, general and administrative	34.5		39.9		38.5
Total share-based compensation expense	$	78.0	$	99.8	$	86.0
Share-based compensation tax benefit	$	22.5	$	29.3	$	25.6
Capitalized share-based compensation expense	$	3.7	$	2.3	$	1.7

Schedule of Unrecognized Compensation Cost, Nonvested Awards

The following table summarizes total compensation costs related to unvested share based awards not yet recognized and the weighted average period over which it is expected to be recognized at September 30, 2016:

	Unrecognized compensation cost for unvested awards (in millions)		Weighted average remaining recognition period (in years)
Options	$	33.5	2.0
Awards	$	63.2	1.0

Schedule of Share-based Payment Awards, Performance Shares, Valuation Assumptions Used

The fair value of these performance share units was estimated on the date of the grant using a Monte Carlo simulation with the following weighted average assumptions:

	Fiscal Year Ended
	September 30, 2016		October 2, 2015		October 3, 2014
Volatility of common stock	38.24	%	37.51	%	36.96	%
Average volatility of peer companies	34.76	%	28.42	%	29.59	%
Average correlation coefficient of peer companies	0.49		0.55		0.47
Risk-free interest rate	0.44	%	0.12	%	0.11	%
Dividend yield	1.23		0.85		—	%

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of each stock option is estimated on the date of the grant using the Black-Scholes option pricing model with the following weighted average assumptions:

	Fiscal Years Ended
	September 30, 2016		October 2, 2015		October 3, 2014
Expected volatility	42.93	%	45.75	%	47.40	%
Risk-free interest rate	0.98	%	1.33	%	1.83	%
Dividend yield	1.23		1.16		0.83
Expected option life (in years)	4.0		4.5		4.6