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Property, Plant and Equipment (Notes)
12 Months Ended
Sep. 30, 2019
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consisted of the following (in millions):
 
September 30,
 
2019
 
2018
 
 
 
 
Buildings and improvements
$
1,499

 
$
1,213

Subscriber systems
661

 
573

Machinery and equipment
2,969

 
2,715

Construction in progress
465

 
704

Land
250

 
258

Total property, plant and equipment
5,844

 
5,463

Less: accumulated depreciation
(2,496
)
 
(2,163
)
Property, plant and equipment - net
$
3,348

 
$
3,300



Interest costs capitalized during the fiscal years ended September 30, 2019, 2018 and 2017 were $6 million, $17 million and $14 million, respectively.