Accounting Changes and Error Corrections (Future Policy Benefits) (Details) - USD ($) $ in Millions		6 Months Ended				12 Months Ended
		Jun. 30, 2023		Jun. 30, 2022		Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits		$ 38,239		$ 37,028		$ 35,689
Life Insurance Product Line [Member] | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(5,424)		(1,668)		74,207	$ 73,447
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(83)	(250)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		74,921		73,971		74,124	73,197
Liability for Future Policy Benefit, Expected Net Premium, Issuance		1,653	[1]	1,567	[2]
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		1,710	[3]	1,695	[1]
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(2,534)	[4]	(2,488)	[3]
Liability for Future Policy Benefit, Expected Net Premium, Derecognition		(35)		0	[4]
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		3		0
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		69,497		72,303
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(6,721)		(2,193)		85,285	84,075
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change		79,289		82,447
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(49)	(153)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		86,010		84,640		85,236	83,922
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		1,653	[5]	1,571	[2]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		1,972	[4]	1,945	[1]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(2,801)		(2,798)	[5]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition		(54)		0	[4]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		4		0
Future policy benefits		9,792		10,144
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		(407)		(482)
Liability for Future Policy Benefit, after Reinsurance		9,385		9,662
Life Insurance Product Line [Member] | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(4,436)		(4,736)		21,330	21,989
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						347	(327)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		22,319		21,552		21,677	21,662
Liability for Future Policy Benefit, Expected Net Premium, Issuance		240	[1]	400	[2]
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		370	[3]	379	[1]
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(466)	[4]	(485)	[3]
Liability for Future Policy Benefit, Expected Net Premium, Derecognition		0		0	[4]
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		498		(404)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		17,883		16,816
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(3,626)		(4,050)		24,655	25,440
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change		22,163		20,933
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						347	(310)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		25,789		24,983		25,002	25,130
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		240	[5]	400	[2]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		474	[4]	489	[1]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(507)		(571)	[5]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition		0		0	[4]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		580		(465)
Future policy benefits		4,280		4,117
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		(285)		(279)
Liability for Future Policy Benefit, after Reinsurance		3,995		3,838
Life Insurance Product Line [Member] | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(3,427)		(1,574)		14,244	14,440
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(51)	215
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		14,795		13,442		14,193	14,655
Liability for Future Policy Benefit, Expected Net Premium, Issuance		610	[1]	515	[2]
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		243	[3]	250	[1]
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(696)	[4]	(679)	[3]
Liability for Future Policy Benefit, Expected Net Premium, Derecognition		0		0	[4]
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		445		(1,299)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		11,368		11,868
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(3,669)		(1,651)		15,454	15,664
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change		12,416		12,948
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(44)	226
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		16,085		14,599		15,410	15,890
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		610	[5]	516	[2]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		259	[4]	266	[1]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(682)		(669)	[5]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition		0		0	[4]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		488		(1,404)
Future policy benefits		1,048		1,080
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		(36)		(30)
Liability for Future Policy Benefit, after Reinsurance		1,012		1,050
Life Insurance Product Line [Member] | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(10,296)		(9,770)		40,506	37,943
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						(8)	58
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						50	(847)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		40,416		36,919		40,548	37,154
Liability for Future Policy Benefit, Expected Net Premium, Issuance		1,264	[1]	2,145	[2]
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		515	[3]	479	[1]
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(997)	[4]	(967)	[3]
Liability for Future Policy Benefit, Expected Net Premium, Derecognition		0		0	[4]
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		(914)		(1,892)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		30,120		27,149
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(12,197)		(11,532)		44,785	41,971
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change		32,586		29,354
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						(8)	35
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						27	(798)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		44,783		40,886		44,804	41,208
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		1,264	[5]	2,085	[2]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		588	[4]	545	[1]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(894)		(917)	[5]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition		0		0	[4]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		(979)		(2,035)
Future policy benefits		2,466		2,205
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		(99)		(98)
Liability for Future Policy Benefit, after Reinsurance		2,367		2,107
Insurance, Other | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(255)		(82)		1,671	228
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(18)	(6)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		1,601		209		1,653	222
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[2]	146		0
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[1]	26		1
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[3]	(225)		(14)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[4]	0		0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		1		0
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		1,346		127
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(551)		(246)		5,823	4,628
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change		5,231		4,233
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(23)	(27)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		5,782		4,479		5,800	4,601
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[2]	154		0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[1]	114		93
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[5]	(270)		(215)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[4]	0		0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		(16)		0
Future policy benefits		3,885		4,106
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		0		0
Liability for Future Policy Benefit, after Reinsurance		3,885		4,106
Insurance, Other | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(356)		(419)		3,394	3,329
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(3)	(7)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		3,354		3,710		3,391	3,322
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[2]	0		581
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[1]	54		56
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[3]	(168)		(181)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[4]	0		0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		77		(68)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		2,998		3,291
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(354)		(415)		3,447	3,393
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change		3,051		3,353
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(10)	(14)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		3,405		3,768		3,437	3,379
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[2]	0		581
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[1]	55		58
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[5]	(166)		(180)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[4]	0		0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		79		(70)
Future policy benefits		53		62
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		0		0
Liability for Future Policy Benefit, after Reinsurance		53		62
Insurance, Other | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(10,656)		(6,867)		38,782	31,973
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						1	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						200	366
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		43,827		38,226		38,983	32,339
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[2]	4,929		10,932
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[1]	428		358
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[3]	(2,186)		(1,542)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[4]	0		0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		1,673		(3,861)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		33,171		31,359
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(11,829)		(7,448)		44,330	38,196
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change		38,281		36,272
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						1	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						186	354
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		50,110		43,720		44,517	38,550
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[2]	4,929		10,932
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[1]	508		441
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[5]	(1,782)		(1,734)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[4]	0		0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		1,938		(4,469)
Future policy benefits		5,110		4,913
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		0		0
Liability for Future Policy Benefit, after Reinsurance		5,110		4,913
Insurance, Other | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		82		131		1,605	1,051
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(3)	98
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		2,085		1,547		1,602	1,149
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[2]	2,163		1,326
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[1]	12		13
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[3]	(1,528)		(681)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[4]	0		0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		(164)		(260)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		2,167		1,678
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(209)		(97)		6,561	6,062
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change		7,778		6,254
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(4)	98
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		7,987		6,351		6,557	6,160
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[2]	2,209		1,326
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[1]	39		36
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[5]	(132)		(111)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[4]	0		0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		(686)		(1,060)
Future policy benefits		5,611		4,576
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		0		0
Liability for Future Policy Benefit, after Reinsurance		$ 5,611		$ 4,576
Accounting Standards Update 2018-12
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits						35,689	47,449
Accounting Standards Update 2018-12 | Life Insurance Product Line [Member] | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax						(6,303)	15,771
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change							(805)		$ 984
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							(4)		254
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change							72,638		71,555
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[6]					3,329	3,522
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[7]					3,423	3,400
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[8]					(5,182)	(5,025)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change						(1)	(5)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change						67,904	89,218
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance						85,285	84,075		81,172
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax						(7,907)	19,185
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change						77,378	103,260
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change							(675)		1,021
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							85		517
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change							83,485		82,710
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]					3,333	3,537
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[7]					3,940	3,916
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[10]					(5,472)	(6,083)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change						(1)	(5)
Future policy benefits						9,474	14,042	$ 17,632
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance						(421)	(697)	(1,123)
Liability for Future Policy Benefit, after Reinsurance						9,053	13,345	16,509
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance						74,207	73,447		70,317
Accounting Standards Update 2018-12 | Life Insurance Product Line [Member] | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax						(4,899)	(199)
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change							189		(45)
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							212		(24)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change							22,390		21,230
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[6]					635	761
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[7]					748	775
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[8]					(950)	(947)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change						(1,493)	170
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change						16,431	21,790
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance						24,655	25,440		24,587
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax						(4,273)	1,905
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change						20,382	27,345
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change							191		(45)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							212		(24)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change							25,843		24,518
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]					635	761
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[7]					958	992
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[10]					(1,051)	(1,025)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change						(1,730)	194
Future policy benefits						3,951	5,555	6,364
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance						(265)	(367)	(386)
Liability for Future Policy Benefit, after Reinsurance						3,686	5,188	5,978
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance						21,330	21,989		21,299
Accounting Standards Update 2018-12 | Life Insurance Product Line [Member] | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax						(2,639)	1,280
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change							123		48
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							835		379
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change							15,398		14,426
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[6]					1,083	2,417
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[7]					500	553
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[8]					(1,324)	(1,488)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[9]					0	(1,167)
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change						(1,413)	(301)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change						11,605	15,720
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance						15,454	15,664		15,281
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax						(2,808)	1,445
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change						12,646	17,109
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change							136		42
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							813		422
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change							16,613		15,745
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]					1,083	2,436
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[7]					530	598
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[10]					(1,260)	(1,609)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[9]					0	(1,176)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change						(1,512)	(330)
Future policy benefits						1,041	1,389	2,670
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance						(31)	(34)	(85)
Liability for Future Policy Benefit, after Reinsurance						1,010	1,355	2,585
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance						14,244	14,440		13,999
Accounting Standards Update 2018-12 | Life Insurance Product Line [Member] | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax						(10,927)	(5,458)
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change							1,604		600
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							197		402
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change							39,744		35,135
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[6]					3,663	4,575
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[7]					1,032	970
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[8]					(1,989)	(2,038)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change						(1,944)	(699)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change						29,579	32,485
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance						44,785	41,971		37,765
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax						(12,858)	(6,475)
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change						31,927	35,496
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change							1,681		699
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							234		559
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change							43,886		39,023
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]					3,667	4,585
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[7]					1,171	1,107
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[10]					(1,832)	(1,971)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change						(2,107)	(773)
Future policy benefits						2,348	3,011	4,419
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance						(100)	(116)	(212)
Liability for Future Policy Benefit, after Reinsurance						2,248	2,895	4,207
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance						40,506	37,943		34,133
Accounting Standards Update 2018-12 | Insurance, Other | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax						(284)	28
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change							(31)		(33)
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							(22)		(29)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change							175		252
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[6]					1,580	0
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[7]					41	3
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[8]					(125)	(27)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change						0	0
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change						1,387	256
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance						5,823	4,628		4,951
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax						(617)	575
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change						5,206	5,203
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change							(34)		(33)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							(46)		(37)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change							4,548		4,881
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]					1,580	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[7]					220	193
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[10]					(525)	(446)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change						0	0
Future policy benefits						3,819	4,947	5,883
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance						0	0	0
Liability for Future Policy Benefit, after Reinsurance						3,819	4,947	5,883
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance						1,671	228		314
Accounting Standards Update 2018-12 | Insurance, Other | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax						(433)	97
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change							0		(30)
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							(12)		17
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change							3,317		3,543
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[6]					574	0
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[7]					112	109
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[8]					(354)	(349)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change						(255)	26
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change						2,961	3,426
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance						3,447	3,393		3,592
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax						(432)	114
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change						3,015	3,507
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change							0		6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							(24)		6
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change							3,369		3,604
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]					574	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[7]					115	112
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[10]					(351)	(350)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change						(260)	27
Future policy benefits						54	81	49
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance						0	0	0
Liability for Future Policy Benefit, after Reinsurance						54	81	49
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance						3,394	3,329		3,556
Accounting Standards Update 2018-12 | Insurance, Other | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax						(8,805)	668
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change							(126)		(76)
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							573		997
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change							32,420		28,720
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[6]					12,594	8,357
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[7]					698	714
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[8]					(3,169)	(3,590)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[9]					0	(1,669)
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change						(3,761)	(559)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change						29,977	32,641
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance						44,330	38,196		33,410
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax						(9,719)	1,174
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change						34,611	39,370
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change							(140)		(76)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							566		1,000
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change							38,622		34,334
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]					12,594	8,357
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[7]					856	890
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[10]					(3,355)	(3,064)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[9]					0	(1,682)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change						(4,387)	(639)
Future policy benefits						4,634	6,729	6,991
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance						0	0	0
Liability for Future Policy Benefit, after Reinsurance						4,634	6,729	6,991
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance						38,782	31,973		27,799
Accounting Standards Update 2018-12 | Insurance, Other | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax						25	247
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change							3		0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							29		777
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change							1,083		1,558
Liability for Future Policy Benefit, Expected Net Premium, Issuance	[6]					1,465	3,156
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	[7]					24	28
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	[8]					(764)	(3,621)
Liability for Future Policy Benefit, Expected Net Premium, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change						(203)	(70)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change						1,630	1,298
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance						6,561	6,062		2,653
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax						(435)	250
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change						6,126	6,312
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change							3		0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience							36		777
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change							6,101		3,430
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]					1,465	3,156
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	[7]					70	63
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	[10]					(227)	(162)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Derecognition	[9]					0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change						(848)	(425)
Future policy benefits						4,496	5,014	1,887
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance						0	0	0
Liability for Future Policy Benefit, after Reinsurance						4,496	5,014	1,887
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance						1,605	1,051		781
Accounting Standards Update 2018-12 | Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits						$ 35,220	$ 35,782
Accounting Standards Update 2018-12 | Previously Reported | Life Insurance Product Line [Member] | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits								10,444
Accounting Standards Update 2018-12 | Previously Reported | Life Insurance Product Line [Member] | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits								3,477
Accounting Standards Update 2018-12 | Previously Reported | Life Insurance Product Line [Member] | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits								1,379
Accounting Standards Update 2018-12 | Previously Reported | Life Insurance Product Line [Member] | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Future policy benefits								3,568
Accounting Standards Update 2018-12 | Previously Reported | Insurance, Other | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									285
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									4,951
Future policy benefits								5,037
Accounting Standards Update 2018-12 | Previously Reported | Insurance, Other | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									3,568
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									3,584
Future policy benefits								16
Accounting Standards Update 2018-12 | Previously Reported | Insurance, Other | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									28,055
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									33,410
Future policy benefits								5,657
Accounting Standards Update 2018-12 | Previously Reported | Insurance, Other | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									781
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									2,645
Future policy benefits								$ 1,874
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjustment | Life Insurance Product Line [Member] | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									20,758
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									26,196
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjustment | Life Insurance Product Line [Member] | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									1,785
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									4,469
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjustment | Life Insurance Product Line [Member] | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									2,599
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									2,989
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjustment | Life Insurance Product Line [Member] | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									(3,385)
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									(3,694)
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjustment | Insurance, Other | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									102
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									931
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjustment | Insurance, Other | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									343
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									372
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjustment | Insurance, Other | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									3,634
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									4,901
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjustment | Insurance, Other | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									114
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									125
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjusted Balance | Life Insurance Product Line [Member] | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									91,077
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									106,471
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjusted Balance | Life Insurance Product Line [Member] | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									23,117
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									29,056
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjusted Balance | Life Insurance Product Line [Member] | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									16,632
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									18,235
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjusted Balance | Life Insurance Product Line [Member] | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									30,782
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									33,641
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjusted Balance | Insurance, Other | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									387
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									5,882
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjusted Balance | Insurance, Other | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									3,911
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									3,956
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjusted Balance | Insurance, Other | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									31,689
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									38,311
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Adjusted Balance | Insurance, Other | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									895
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									2,770
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Original Balance | Life Insurance Product Line [Member] | Americas [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									70,319
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									80,275
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Original Balance | Life Insurance Product Line [Member] | CANADA | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									21,332
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									24,587
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Original Balance | Life Insurance Product Line [Member] | EMEA [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									14,033
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									15,246
Accounting Standards Update 2018-12 | Cumulative Effect, Period of Adoption, Original Balance | Life Insurance Product Line [Member] | Asia Pacific [Member] | Other Segments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax									34,167
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax									$ 37,335

[1] Interest accrual: The interest earned on the beginning present value of either the expected net premiums or the expected future policy benefits using the original interest rate.

[2] Issuances: The present value, using the original discount rate, of the expected net premiums or the expected future policy benefits related to new reinsurance contracts that became effective during the current period and new policies assumed on existing contracts.

[3] Net premiums collected: The portion of gross premiums collected from the ceding company that is used to fund expected benefit payments.

[4] Derecognition: Includes the effects of treaty recaptures and treaty amendments that resulted in the termination of an existing treaty and the issuance of a new treaty under the internal replacement model.

[5] Benefit payments: The release of the present value, using the original discount rate, of the expected future policy benefits due to death, lapse/withdrawal, and other benefit payments based on current assumptions.

[6] Issuances: The present value, using the original discount rate, of the expected net premiums or the expected future policy benefits related to new reinsurance contracts that became effective during the current period and new policies assumed on existing contracts.

[7] Interest accrual: The interest earned on the beginning present value of either the expected net premiums or the expected future policy benefits using the original interest rate.

[8] Net premiums collected: The portion of gross premiums collected from the ceding company that is used to fund expected benefit payments.

[9] Derecognition: Includes the effects of treaty recaptures and treaty amendments that resulted in the termination of an existing treaty and the issuance of a new treaty under the internal replacement model.

[10] Benefit payments: The release of the present value, using the original discount rate, of the expected future policy benefits due to death, lapse/withdrawal, and other benefit payments based on current assumptions.