THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Adoption of ASU 2020-06 (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Jan. 01, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Statement of operations impacts
Interest expense	$ 31,850	$ 32,009	$ 95,907	$ 98,654
Income tax provision	(18,627)	(26,122)	(38,200)	(14,776)
Net earnings from continuing operations	$ 130,901	$ 140,113	$ 444,769	$ 439,044
Net earnings per share from continuing operations:
Basic (USD per share)	$ 0.47	$ 0.54	$ 1.64	$ 1.81
Diluted (USD per share)	$ 0.43	$ 0.47	$ 1.46	$ 1.59
Weighted average dilutive shares outstanding (shares)	316,951	305,696	312,917	239,398
Balance sheet impacts at December 31, 2020:
Non-current deferred tax asset	$ 310,034		$ 310,034			$ 293,487	$ 293,487
Long-term debt, net	3,847,896		3,847,896			3,840,930	3,840,930
Additional paid-in capital						7,089,007
Retained deficit	(7,975,882)		(7,975,882)			(8,422,237)	(8,422,237)
Adjustment from adoption of ASU	(60,816)	$ (1,687,767)	(60,816)	$ (1,687,767)	$ (135,088)		(1,413,375)	$ (1,961,670)	$ 3,627,800
Retained Deficit
Balance sheet impacts at December 31, 2020:
Adjustment from adoption of ASU	(7,975,882)	(8,571,272)	(7,975,882)	(8,571,272)	(8,107,092)		(8,422,237)	(8,712,479)	1,725,046
Additional Paid-in Capital
Balance sheet impacts at December 31, 2020:
Adjustment from adoption of ASU	$ 8,110,650	6,990,979	$ 8,110,650	6,990,979	$ 8,068,659		7,089,007	$ 6,874,542	11,378,160
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment | Retained Deficit
Balance sheet impacts at December 31, 2020:
Adjustment from adoption of ASU									35,100
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment | Additional Paid-in Capital
Balance sheet impacts at December 31, 2020:
Adjustment from adoption of ASU									$ 305,600
Previously Reported
Statement of operations impacts
Interest expense		43,189		131,485
Income tax provision		(23,568)		(7,257)
Net earnings from continuing operations		$ 131,487		$ 413,732
Net earnings per share from continuing operations:
Basic (USD per share)		$ 0.51		$ 1.69
Diluted (USD per share)		$ 0.45		$ 1.53
Weighted average dilutive shares outstanding (shares)		289,950		225,399
Balance sheet impacts at December 31, 2020:
Non-current deferred tax asset							224,013
Long-term debt, net							3,534,706
Additional paid-in capital							7,394,646
Retained deficit							$ (8,491,126)
Revision of Prior Period, Accounting Standards Update, Adjustment | Accounting Standards Update 2020-06
Statement of operations impacts
Interest expense		$ (11,180)		$ (32,831)
Income tax provision		(2,554)		(7,519)
Net earnings from continuing operations		$ 8,626		$ 25,312
Net earnings per share from continuing operations:
Basic (USD per share)		$ 0.03		$ 0.12
Diluted (USD per share)		$ 0.02		$ 0.06
Weighted average dilutive shares outstanding (shares)		15,746		13,999
Balance sheet impacts at December 31, 2020:
Non-current deferred tax asset						69,474
Long-term debt, net						306,224
Additional paid-in capital						(305,639)
Retained deficit						$ 68,889