Retirement Benefits (Schedule of Changes in Projected Benefit Obligations and Fair Value of Plan Assets) (Details) (USD $) In Thousands	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Pension Plans, Defined Benefit [Member]
Changes in projected benefit obligation:
Projected benefit obligation at beginning of year	$ 154,443	$ 143,001
Obligation assumed in IDS Acquisition	2,038	0
Service cost	4,425	4,431	2,125
Interest cost	7,930	7,151	5,139
Net actuarial (gains) losses	(1,812)	25
Contribution by participants	122	25
Benefits paid	(4,300)	(4,691)
Amounts paid by Company for Pension Protection Fund levy	(67)	0
Curtailment loss	0	165
Plan amendments	0	3,962
Foreign currency exchange rate changes	917	374
Projected benefit obligation at end of year	163,696	154,443	143,001
Changes in fair value of plan assets:
Fair value of plan assets at beginning of year	128,667	104,828
Plan assets received in connection with IDS Acquisition	1,604	0
Actual return on plan assets	1,190	11,207
Contributions by the company	10,731	17,373
Contributions by plan participants	122	25
Benefits paid	(4,300)	(4,691)
Foreign currency exchange rate changes	333	(75)
Fair value of plan assets at end of year	138,347	128,667	104,828
Underfunded status at end of year	(25,349)	(25,776)
United States Pension Plans of US Entity, Defined Benefit [Member]
Changes in projected benefit obligation:
Projected benefit obligation at beginning of year	97,786	89,551
Obligation assumed in IDS Acquisition	0	0
Service cost	3,433	3,647	1,409
Interest cost	5,646	4,890	2,964
Net actuarial (gains) losses	1,686	(2,877)
Contribution by participants	0	0
Benefits paid	(2,210)	(1,552)
Amounts paid by Company for Pension Protection Fund levy	0	0
Curtailment loss	0	165
Plan amendments	0	3,962
Foreign currency exchange rate changes	0	0
Projected benefit obligation at end of year	106,341	97,786	89,551
Changes in fair value of plan assets:
Fair value of plan assets at beginning of year	85,128	64,102
Plan assets received in connection with IDS Acquisition	0	0
Actual return on plan assets	482	7,998
Contributions by the company	6,580	14,580
Contributions by plan participants	0	0
Benefits paid	(2,210)	(1,552)
Foreign currency exchange rate changes	0	0
Fair value of plan assets at end of year	89,980	85,128	64,102
Underfunded status at end of year	(16,361)	(12,658)
Foreign Pension Plans, Defined Benefit [Member]
Changes in projected benefit obligation:
Projected benefit obligation at beginning of year	56,657	53,450
Obligation assumed in IDS Acquisition	2,038	0
Service cost	992	784	716
Interest cost	2,284	2,261	2,175
Net actuarial (gains) losses	(3,498)	2,902
Contribution by participants	122	25
Benefits paid	(2,090)	(3,139)
Amounts paid by Company for Pension Protection Fund levy	(67)	0
Curtailment loss	0	0
Plan amendments	0	0
Foreign currency exchange rate changes	917	374
Projected benefit obligation at end of year	57,355	56,657	53,450
Changes in fair value of plan assets:
Fair value of plan assets at beginning of year	43,539	40,726
Plan assets received in connection with IDS Acquisition	1,604	0
Actual return on plan assets	708	3,209
Contributions by the company	4,151	2,793
Contributions by plan participants	122	25
Benefits paid	(2,090)	(3,139)
Foreign currency exchange rate changes	333	(75)
Fair value of plan assets at end of year	48,367	43,539	40,726
Underfunded status at end of year	(8,988)	(13,118)
United Kingdom Plan, Defined Benefit [Member]
Changes in projected benefit obligation:
Projected benefit obligation at end of year	39,677
Changes in fair value of plan assets:
Fair value of plan assets at end of year	37,546
Japan Plan, Defined Benefit [Member]
Changes in projected benefit obligation:
Projected benefit obligation at end of year	15,140
Changes in fair value of plan assets:
Fair value of plan assets at end of year	8,947
Switzerland Plan, Defined Benefit [Member]
Changes in projected benefit obligation:
Projected benefit obligation at end of year	2,538
Changes in fair value of plan assets:
Fair value of plan assets at end of year	1,874
Other Postretirement Benefit Plans, Defined Benefit [Member]
Changes in projected benefit obligation:
Projected benefit obligation at beginning of year	37,222	42,427
Obligation assumed in IDS Acquisition			2,251
Service cost	92	120	169
Interest cost	1,974	2,081	2,330
Net actuarial (gains) losses	(3,146)	(3,932)
Contribution by participants	2,133	2,274
Benefits paid	(5,349)	(5,738)
Foreign currency exchange rate changes	(3)	(10)
Projected benefit obligation at end of year	32,923	37,222	42,427
Changes in fair value of plan assets:
Fair value of plan assets at beginning of year	0	0
Contributions by the company	3,216	3,464
Contributions by plan participants	2,133	2,274
Benefits paid	(5,349)	(5,738)
Fair value of plan assets at end of year	0	0	0
Underfunded status at end of year	$ (32,923)	$ (37,222)

The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost)

-URI http://asc.fasb.org/extlink&oid=6504226

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost)

-URI http://asc.fasb.org/extlink&oid=6504192

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 106

-Paragraph 518

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 87

-Paragraph 264

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(iv)(b)(i)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.