Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 867,262	$ 1,009,021
Short-term investments	59,391	48,988
Accounts receivable (net of allowance of $17,617 and $14,786 respectively)	455,807	427,022
Short-term finance receivables (net of allowance of $12,454 and $12,187, respectively)	789,661	828,003
Inventories	41,964	40,769
Current income taxes	5,947	58,439
Other current assets and prepayments	99,332	83,293
Assets of discontinued operations	4,854	334,848
Total current assets	2,324,218	2,830,383
Property, plant and equipment, net	410,114	373,503
Rental property and equipment, net	178,099	183,956
Long-term finance receivables (net of allowance of $7,768 and $6,446, respectively)	592,165	652,087
Goodwill	1,766,511	1,774,645
Intangible assets, net	227,137	272,186
Noncurrent income taxes	61,420	59,909
Other assets	413,239	540,751
Total assets	5,972,903	6,687,420
Current liabilities:
Accounts payable and accrued liabilities	1,401,635	1,458,854
Current portion of long-term debt	199,535	271,057
Advance billings	237,529	257,766
Current income taxes	15,165	8,823
Liabilities of discontinued operations	3,276	72,808
Total current liabilities	1,857,140	2,069,308
Deferred taxes on income	295,808	249,143
Tax uncertainties and other income tax liabilities	39,548	102,051
Long-term debt	3,066,073	3,559,278
Other noncurrent liabilities	474,862	519,079
Total liabilities	5,733,431	6,498,859
Commitments and contingencies (See Note 16)
Stockholders' equity:
Cumulative preferred stock, $50 par value, 4% convertible	1	1
Cumulative preference stock, no par value, $2.12 convertible	396	441
Common stock, $1 par value (480,000,000 shares authorized; 323,337,912 shares issued)	323,338	323,338
Additional paid-in capital	121,475	138,367
Retained earnings	5,416,777	5,229,584
Accumulated other comprehensive loss	(948,426)	(792,173)
Treasury stock, at cost (135,662,830 and 136,734,174 shares, respectively)	(4,674,089)	(4,710,997)
Total stockholders’ equity	239,472	188,561
Total liabilities and stockholders’ equity	$ 5,972,903	$ 6,687,420