Share-Based Compensation (Tables)

12 Months Ended

Sep. 30, 2015

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

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

We estimated the fair value of each stock option on the date of grant using the Black-Scholes pricing model and the following assumptions:

	2015		2014		2013
Average risk-free interest rate	1.61	%	1.52	%	0.66	%
Expected dividend yield	2.25	%	2.13	%	2.35	%
Expected volatility	31	%	41	%	43	%
Expected term (years)	5.1		5.2		5.3

Schedule of Share-Based Compensation, Stock Options, Activity

A summary of stock option activity for the year ended September 30, 2015 is:

	Shares (in thousands)		Wtd. Avg. Exercise Price		Wtd. Avg. Remaining Contractual Term (years)	Aggregate Intrinsic Value of In-The-Money Options (in millions)
Outstanding at October 1, 2014	4,523		$	75.65
Granted	1,041		115.62
Exercised	(897	)	67.18
Forfeited	(90	)	105.58
Cancelled	(3	)	84.75
Outstanding at September 30, 2015	4,574		85.81		6.8	$	92.1
Vested or expected to vest at September 30, 2015	4,397		84.94		6.8	91.5
Exercisable at September 30, 2015	2,665		70.23		5.6	85.2

Schedule of Nonvested Performance Units Activity

A summary of performance share activity for the year ended September 30, 2015 is as follows:

	Performance Shares (in thousands)		Wtd. Avg. Grant Date Share Fair Value
Outstanding at October 1, 2014	224		$	102.54
Granted(1)	87		103.70
Adjustmentfor performance results achieved(2)	71		101.57
Vested and issued	(154	)	101.57
Forfeited	(2	)	103.56
Outstanding at September 30, 2015	226		103.33

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest

The following table summarizes information about performance shares vested during the years ended September 30, 2015, 2014 and 2013:

	2015			2014			2013
Percent payout	187		%	180		%	173		%
Shares vested (in thousands)	154			127			232
Total fair value of shares vested (in millions)	$	17.2		$	14.2		$	18.7

Schedule of Share-Based Payment Award, Performance-Based Units, Valuation Assumptions

The per-share fair value of performance share awards granted during the years ended September 30, 2015, 2014 and 2013 was $103.70, $108.48 and $98.15, respectively, which we determined using a Monte Carlo simulation and the following assumptions:

	2015		2014		2013
Average risk-free interest rate	0.96	%	0.60	%	0.32	%
Expected dividend yield	2.22	%	2.11	%	2.32	%
Expected volatility	24	%	33	%	36	%

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of restricted stock and restricted stock unit activity for the year ended September 30, 2015 is as follows:

	Restricted Stock and Restricted Stock Units (in thousands)		Wtd. Avg. Grant Date Share Fair Value
Outstanding at October 1, 2014	190		$	84.57
Granted	52		115.02
Vested	(71	)	73.79
Forfeited	(8	)	100.61
Outstanding at September 30, 2015	163		98.22