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PROTON SOLUTIONS LOANS AND INVESTMENTS (Tables)
 3 Months Ended
Dec. 28, 2018
Receivables [Abstract]  
Schedule of Loans and Investments to Fund PT Centers
The following table lists the Company's outstanding loans, available-for-sale securities and commitments for funding development, construction and operation of various proton therapy centers:
 
 
December 28, 2018
 
September 28, 2018
(In millions)
 
Balance
 
Commitment
 
 Balance
 
Commitment
Notes receivable and secured debt:
 
 
 
 
 
 
 
 
NYPC loan (1)
 
$
28.9

 
$
—

 
$
28.0

 
$
—

RPTC senior secured debt (2)
 
24.6

 
—

 
24.9

 
—

Proton International LLC loan (1)
 
1.7

 
—

 
1.7

 
—

 
 
$
55.2

 
$
—

 
$
54.6

 
$
—

Available-for-sale Securities:
 
 
 
 
 
 
 
 
MPTC Series B-1 Bonds (2)
 
$
25.6

 
$
—

 
$
25.1

 
$
—

MPTC Series B-2 Bonds (1)
 
23.6

 
—

 
23.1

 
—

GPTC securities (2)
 
8.3

 
—

 
7.9

 
—

APTC securities (2)
 
6.2

 
—

 
6.4

 
—

 
 
$
63.7

 
$
—

 
$
62.5

 
$
—

CPTC Loans and Investment:
 
 
 
 
 
 
 
 
Short-term revolving loan (2)
 
$
4.2

 
$
3.0

 
$
3.7

 
$
3.5

Term loan (1)
 
44.0

 
—

 
44.0

 
—

Equity investment in CPTC (1)
 
—

 
—

 
2.2

 
—

 
 
$
48.2

 
$
3.0

 
$
49.9

 
$
3.5

(1) 
Included in other assets at December 28, 2018 and September 28, 2018 on the Company's Condensed Consolidated Balance Sheets.
(2) 
Included in prepaid and other current assets on the Company's Condensed Consolidated Balance Sheets.