Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 905,561	$ 729,384
Short-term investments	44,148	45,543
Accounts receivable, less reserve of $2,696 in 2016 and $6,181 in 2015	375,169	445,948
Inventories	124,325	128,541
Deferred income taxes		17,206
Prepaid expenses and other	78,067	64,475
Assets held for sale	45,352
Current assets of discontinued operations	64	8,097
Total current assets	1,572,686	1,439,194
INVESTMENTS	84,955	104,354
PROPERTY, PLANT AND EQUIPMENT, at cost:
Contract drilling equipment	7,881,544	7,985,362
Construction in progress	98,313	95,518
Real estate properties	62,929	65,466
Other	444,843	457,802
PROPERTY, PLANT AND EQUIPMENT, gross	8,487,629	8,604,148
Less-Accumulated depreciation	3,342,896	3,040,978
Net property, plant and equipment	5,144,733	5,563,170
NONCURRENT ASSETS:
Other assets	29,645	40,524
TOTAL ASSETS	6,832,019	7,147,242
CURRENT LIABILITIES:
Long-term debt due within one year		39,094
Accounts payable	95,422	108,169
Accrued liabilities	234,639	197,557
Current liabilities of discontinued operations	59	3,377
Total current liabilities	330,120	348,197
NONCURRENT LIABILITIES:
Long-term debt	491,847	492,443
Deferred income taxes	1,342,456	1,295,916
Other	102,781	110,120
Noncurrent liabilities of discontinued operations	3,890	4,720
Total noncurrent liabilities	1,940,974	1,903,199
SHAREHOLDERS' EQUITY:
Common stock, $.10 par value, 160,000,000 shares authorized, 111,400,339 and 110,987,546 shares issued as of September 30, 2016 and 2015, respectively, and 108,077,916 and 107,767,915 shares outstanding as of September 30, 2016 and 2015, respectively	11,140	11,099
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued
Additional paid-in capital	448,452	420,141
Retained earnings	4,289,807	4,648,346
Accumulated other comprehensive loss	(204)	(1,377)
Total shareholders' equity before treasury stock	4,749,195	5,078,209
Less treasury stock, 3,322,423 shares in 2016 and 3,219,631 shares in 2015, at cost	(188,270)	(182,363)
Total shareholders' equity	4,560,925	4,895,846
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 6,832,019	$ 7,147,242

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).