Pension Plans (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets gain (loss)		$ 1,878	$ 15,914	$ 13,610
Pension settlement loss		66,332	0	0
Defined Benefit Plan, Contributions by Employer		$ 46,700	$ 12,905	$ 9,969
Frozen Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase		0.00%
U.S. Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	[1]	0.00%	0.00%	0.00%
Net periodic pension cost		$ 72,136	$ 523	$ 2,013
Pension settlement loss		66,332	0	$ 0
Defined Benefit Plan, Contributions by Employer		$ 25,475	$ 10,552
International Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	[1]	3.00%	3.00%	3.00%
Long-term rate of return		5.73%
Net periodic pension cost		$ 1,740	$ 2,771	$ 3,517
Pension settlement loss		0	0	$ 0
Defined Benefit Plan, Contributions by Employer		$ 21,225	$ 2,353
Cocreate Member
Defined Benefit Plan Disclosure [Line Items]
Current asset allocation target for equity securities		60.00%
Current asset allocation target for fixed income securities		40.00%
Other International Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Current asset allocation target for fixed income securities		100.00%
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans, vesting period		1 year
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans, vesting period		5 years
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss expected to be recognized in the following year		$ 2,314
Scenario, Forecast [Member] | Subsequent Year, Estimated Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost		1,896
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year		$ 769

[1] The rate of increase in future compensation is weighted for all plans, ongoing and frozen (with a 0% increase for frozen plans). The weighted rate of increase for ongoing non-U.S. plans was 3% at September 30, 2015 and 2014.