XML 63 R47.htm IDEA: XBRL DOCUMENT v3.8.0.1
Retirement Benefit Liabilities (Tables)
 3 Months Ended
Dec. 31, 2017
Retirement Benefits [Abstract]  
Summary of retirement benefit liabilities
Retirement benefit liabilities consisted of the following (in millions):
 
December 31,
2017
 
September 30,
2017
Retiree medical liability
$
95

 
$
104

Pension liability
212

 
219

Other
15

 
15

Subtotal
322

 
338

Less: current portion (included in compensation and benefits, Note 16)
(24
)
 
(24
)
Retirement benefits
$
298

 
$
314
Components of net periodic pension and retiree medical expense
The components of net periodic pension and retiree medical expense included in continuing operations for the three months ended December 31 are as follows (in millions):
 
2017
 
2016
 
Pension
 
Retiree Medical
 
Pension
 
Retiree Medical
Interest cost
$
13

 
$
1

 
$
13

 
$
4

Assumed return on plan assets
(24
)
 
—

 
(23
)
 
—

Amortization of prior service costs
—

 
(9
)
 
—

 
(1
)
Recognized actuarial loss
7

 
4

 
7

 
4

Total expense (income)
$
(4
)
 
$
(4
)
 
$
(3
)
 
$
7