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Retirement Plans (Tables)
 12 Months Ended
Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]  
Schedule Of Retirement Plans Expense
 
U.S. Plans
 
Non-U.S. Plans
 
2015

 
2016

 
2017

 
2015

 
2016

 
2017

Defined benefit plans:
 
 
 
 
 
 
 
 
 
 
 
     Service cost (benefits earned during the period)
$
69

 
59

 
60

 
37

 
26

 
19

     Interest cost
182

 
148

 
134

 
46

 
39

 
30

     Expected return on plan assets
(303
)
 
(296
)
 
(290
)
 
(58
)
 
(52
)
 
(56
)
     Net amortization and other
174

 
166

 
211

 
20

 
17

 
22

       Net periodic pension expense
122

 
77

 
115

 
45

 
30

 
15

Defined contribution plans
111

 
104

 
96

 
61

 
56

 
47

             Total retirement plans expense
$
233

 
181

 
211

 
106

 
86

 
62

The components of net postretirement benefits expense for the years ended September 30 follow:
 
2015

 
2016

 
2017

Service cost
$
1

 
1

 
1

Interest cost
9

 
8

 
6

Net amortization
(22
)
 
(21
)
 
(19
)
     Net postretirement expense
$
(12
)
 
(12
)
 
(12
)
Reconciliations Of Actuarial Present Value Of Projected Benefit Obligations And Fair Value Of Plan Assets For Defined Benefit Pension Plans
Details of the changes in the actuarial present value of the projected benefit obligation and the fair value of plan assets for defined benefit pension plans follow:
 
U.S. Plans
 
Non-U.S. Plans
 
2016

 
2017

 
2016

 
2017

Projected benefit obligation, beginning
$
4,263

 
4,696

 
1,248

 
1,320

     Service cost
59

 
60

 
26

 
19

     Interest cost
148

 
134

 
39

 
30

     Actuarial (gain) loss
565

 
(144
)
 
275

 
(83
)
     Benefits paid
(191
)
 
(201
)
 
(31
)
 
(29
)
     Settlements
(151
)
 
(125
)
 
(82
)
 
(25
)
     Acquisitions (Divestitures), net
—

 
(55
)
 
(6
)
 
163

     Foreign currency translation and other
3

 
4

 
(149
)
 
94

Projected benefit obligation, ending
$
4,696

 
4,369

 
1,320

 
1,489

 
 
 
 
 
 
 
 
Fair value of plan assets, beginning
$
3,928

 
4,110

 
935

 
909

     Actual return on plan assets
491

 
516

 
155

 
61

     Employer contributions
31

 
20

 
35

 
25

     Benefits paid
(191
)
 
(201
)
 
(31
)
 
(29
)
     Settlements
(151
)
 
(125
)
 
(82
)
 
(25
)
     Acquisitions (Divestitures), net
—

 
(30
)
 
—

 
232

     Foreign currency translation and other
2

 
2

 
(103
)
 
63

Fair value of plan assets, ending
$
4,110

 
4,292

 
909

 
1,236

 
 
 
 
 
 
 
 
     Net amount recognized in the balance sheet
$
(586
)
 
(77
)
 
(411
)
 
(253
)
 
 
 
 
 
 
 
 
Location of net amount recognized in the balance sheet:
 
 
 
 
 
 
 
Noncurrent asset
$
—

 
154

 
1

 
43

Current liability
(11
)
 
(11
)
 
(7
)
 
(11
)
Noncurrent liability
(565
)
 
(220
)
 
(279
)
 
(285
)
Net liability held-for-sale
(10
)
 
—

 
(126
)
 
—

     Net amount recognized in the balance sheet
(586
)
 
(77
)
 
(411
)
 
(253
)
 
 
 
 
 
 
 
 
Pretax accumulated other comprehensive loss
$
(1,527
)
 
(923
)
 
(389
)
 
(238
)
Details of the changes in actuarial present value of accumulated postretirement benefit obligations follow:
 
2016

 
2017

Benefit obligation, beginning
$
213

 
206

     Service cost
1

 
1

     Interest cost
8

 
6

     Actuarial (gain) loss
—

 
(24
)
     Benefits paid
(16
)
 
(13
)
     Divestitures
—

 
(2
)
Benefit obligation, ending (recognized in balance sheet)
$
206

 
174
Schedule Of Weighted-Average Assumptions Used In Valuations Of Pension Benefits
The weighted-average assumptions used in the valuation of pension benefits follow:
 
U.S. Plans
 
Non-U.S. Plans
 
2015

 
2016

 
2017

 
2015

 
2016

 
2017

Net pension expense
 
 
 
 
 
 
 
 
 
 
 
Discount rate used to determine service cost
4.25
%
 
4.60
%
 
3.75
%
 
3.6
%
 
3.3
%
 
2.3
%
Discount rate used to determine interest cost
4.25
%
 
3.50
%
 
2.90
%
 
3.6
%
 
3.3
%
 
2.3
%
Expected return on plan assets
7.50
%
 
7.50
%
 
7.25
%
 
6.6
%
 
6.4
%
 
6.2
%
Rate of compensation increase
3.25
%
 
3.25
%
 
3.25
%
 
3.4
%
 
3.4
%
 
3.2
%
 
 
 
 
 
 
 
 
 
 
 
 
Benefit obligations
 
 
 
 
 
 
 
 
 
 
 
Discount rate
4.35
%
 
3.50
%
 
3.76
%
 
3.3
%
 
2.3
%
 
2.6
%
Rate of compensation increase
3.25
%
 
3.25
%
 
3.25
%
 
3.4
%
 
3.2
%
 
3.4
%
Schedule Of Asset Allocations And Weighted-Average Target Allocations
The Company's asset allocations at September 30, 2017 and 2016, and weighted-average target allocations follow:
 
U.S. Plans
 
Non-U.S. Plans
 
2016

 
2017

 
Target
 
2016

 
2017

 
Target
Equity securities
66
%
 
67
%
 
60-70%
 
51
%
 
52
%
 
50-60%
Debt securities
29

 
28

 
25-35
 
36

 
38

 
25-35
Other
5

 
5

 
3-10
 
13

 
10

 
10-20
     Total
100
%
 
100
%
 
100%
 
100
%
 
100
%
 
100%
The fair values of defined benefit pension assets as of September 30, organized by asset class and by the fair value hierarchy of ASC 820, Fair Value Measurement, follow. Investments valued based on the net asset value (NAV) of fund units held, as derived from the fair value of the underlying assets, are excluded from the fair value hierarchy.
 
Level 1

 
Level 2

 
Level 3

 
Measured at NAV
 
Total

 
%

2017
 
 
 
 
 
 
 
 
 
 
 
U.S. equities
$
1,059

 
5

 
338

 
357

 
1,759

 
32
%
International equities
724

 
6

 
—

 
739

 
1,469

 
27
%
Emerging market equities
—

 
—

 
—

 
276

 
276

 
5
%
Corporate bonds
—

 
514

 
—

 
283

 
797

 
14
%
Government bonds
3

 
369

 
—

 
399

 
771

 
14
%
High-yield bonds
—

 
—

 
—

 
132

 
132

 
2
%
Other
132

 
6

 
113

 
73

 
324

 
6
%
     Total
$
1,918

 
900

 
451

 
2,259

 
5,528

 
100
%
 
 
 
 
 
 
 
 
 
 
 
 
2016
 
 
 
 
 
 
 
 
 
 
 
U.S. equities
$
1,081

 
4

 
292

 
301

 
1,678

 
33
%
International equities
627

 
8

 
—

 
599

 
1,234

 
25
%
Emerging market equities
—

 
—

 
—

 
257

 
257

 
5
%
Corporate bonds
—

 
476

 
—

 
172

 
648

 
13
%
Government bonds
3

 
392

 
—

 
357

 
752

 
15
%
High-yield bonds
—

 
—

 
—

 
122

 
122

 
2
%
Other
144

 
2

 
113

 
69

 
328

 
7
%
     Total
$
1,855

 
882

 
405

 
1,877

 
5,019

 
100
%
Reconciliation Of Change In Value For Level 3 Assets
Details of the changes in value for Level 3 assets follow:
 
2016

 
2017

Level 3, beginning
$
371

 
405

     Gains (Losses) on assets held
18

 
49

     Gains (Losses) on assets sold
(20
)
 
(28
)
     Purchases, sales and settlements, net
36

 
25

Level 3, ending
$
405

 
451