New Valley LLC (Combined Financial Statements for Unconsolidated Subsidiaries) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement
Total revenues	$ 554,590	$ 547,831	$ 445,760	$ 454,488	$ 439,565	$ 504,790	$ 538,432	$ 420,924	$ 2,002,669	$ 1,903,711	$ 1,870,262
Equity in (losses) earnings									56,268	17,000	3,158
Cost of sales									1,367,145	1,301,579	1,292,484
Other expenses									(5,456)	21,305	763
Balance Sheets
Investment in real estate	85,400				131,556				85,400	131,556
Assets	1,343,409				1,505,089				1,343,409	1,505,089	1,549,504
Total liabilities	2,003,096				2,190,105				2,003,096	2,190,105
Non-controlling interest	0				448				0	448
New Valley LLC
Balance Sheets
Investment in real estate	85,400				131,556				85,400	131,556
New Valley LLC | Condominium and Mixed Use Development
Balance Sheets
Investment in real estate	68,238				106,920				68,238	106,920
New Valley LLC | Condominium and Mixed Use Development | Unconsolidated Properties
Income Statement
Total revenues									386,859	208,767	394,457
Cost of sales									302,234	76,162	95,873
Other expenses									270,642	149,014	186,261
(Loss) income from continuing operations									(186,017)	(16,409)	112,323
Balance Sheets
Investment in real estate	4,465,118				4,079,125				4,465,118	4,079,125
Assets	4,551,788				4,155,625				4,551,788	4,155,625
Total debt	3,569,361				3,057,005				3,569,361	3,057,005
Total liabilities	3,921,492				3,444,868				3,921,492	3,444,868
Non-controlling interest	83,807				123,736				83,807	123,736
New Valley LLC | Apartment & Office Buildings | Unconsolidated Properties
Income Statement
Total revenues									65,808	70,862	44,366
Other expenses									63,705	67,094	105,899
(Loss) income from continuing operations									2,103	3,768	(61,533)
Balance Sheets
Investment in real estate	544,610				545,400				544,610	545,400
Assets	563,523				562,879				563,523	562,879
Total debt	392,324				402,526				392,324	402,526
Total liabilities	399,269				410,723				399,269	410,723
Non-controlling interest	123,273				114,193				123,273	114,193
New Valley LLC | Hotels
Balance Sheets
Investment in real estate	4,481				4,623				4,481	4,623
New Valley LLC | Hotels | Unconsolidated Properties
Income Statement
Total revenues									130,742	147,446	171,949
Cost of sales									2,671	5,399	4,522
Other expenses									256,973	220,045	268,007
(Loss) income from continuing operations									(128,902)	(77,998)	(100,580)
Balance Sheets
Investment in real estate	1,489,085				1,017,810				1,489,085	1,017,810
Assets	1,575,800				1,133,697				1,575,800	1,133,697
Total debt	1,071,445				778,194				1,071,445	778,194
Total liabilities	1,143,419				816,118				1,143,419	816,118
Non-controlling interest	427,439				284,298				427,439	284,298
New Valley LLC | Commercial
Balance Sheets
Investment in real estate	9,675				9,486				9,675	9,486
New Valley LLC | Commercial | Unconsolidated Properties
Income Statement
Total revenues									7,911	7,821	7,688
Equity in (losses) earnings									(13,671)	24,159	49,085
Other expenses									4,740	7,724	11,647
(Loss) income from continuing operations									(10,500)	24,256	45,126
Balance Sheets
Investment in real estate	51,487				52,384				51,487	52,384
Assets	70,270				70,169				70,270	70,169
Total debt	55,625				55,625				55,625	55,625
Total liabilities	55,199				54,342				55,199	54,342
New Valley LLC | Other
Balance Sheets
Investment in real estate	3,006				10,527				3,006	10,527
New Valley LLC | Other | Unconsolidated Properties
Income Statement
Total revenues									571	390,478	19,448
Cost of sales									0	220,316	0
Other expenses									48,633	155,257	32,739
(Loss) income from continuing operations									(48,062)	14,905	$ (13,291)
Balance Sheets
Investment in real estate	1,216,819				1,054,134				1,216,819	1,054,134
Assets	1,237,794				1,192,149				1,237,794	1,192,149
Total debt	722,930				671,845				722,930	671,845
Total liabilities	903,196				850,587				903,196	850,587
Non-controlling interest	$ 272,196				$ 263,438				$ 272,196	$ 263,438