Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Available-for-sale securities
Mortgage loans	$ 6,024	$ 5,470
Investment funds	2,552	2,460
Accumulated other comprehensive income	1,060	367
Related Party
Available-for-sale securities
Accumulated other comprehensive income	66	12
Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Available-for-sale securities
Fixed maturity securities, amortized cost	54,775	51,110
Equity securities, amortized cost	379	319
Mortgage loans	6,024	5,470
Investment funds	697	689
Funds withheld at interest	6,834	6,538
Real estate held for sale	26	23
Short-term investments, cost	106	189
Consolidated Entity Excluding Variable Interest Entities (VIE)
Available-for-sale securities
Fixed maturity securities, amortized cost	55,109
Accrued investment income	566	554
Reinsurance recoverable	5,958	6,001
Interest sensitive contract liabilities	64,911	61,532
Future policy benefits	15,481	14,592
Funds withheld liability	391	380
Other liabilities	1,374	688
Consolidated Entity Excluding Variable Interest Entities (VIE) \| Related Party
Available-for-sale securities
Fixed maturity securities, amortized cost	334	341
Equity securities, amortized cost	0	20
Investment funds	1,260	1,198
Short-term investments, cost	28	0
Accrued investment income	9	9
Other liabilities	63	56
Variable Interest Entities
Available-for-sale securities
Investment funds	595	573
Other liabilities	45	34
Variable Interest Entities \| Related Party
Available-for-sale securities
Equity securities, amortized cost	143	143
Investment funds	583	562
Fair Value \| Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Available-for-sale securities
Mortgage loans	43	44
Investment funds	94	99
Funds withheld at interest	279	140
Fair Value \| Consolidated Entity Excluding Variable Interest Entities (VIE)
Available-for-sale securities
Reinsurance recoverable	1,782	1,692
Interest sensitive contract liabilities	7,619	6,574
Future policy benefits	2,433	2,400
Funds withheld liability	15	6
Fair Value \| Consolidated Entity Excluding Variable Interest Entities (VIE) \| Related Party
Available-for-sale securities
Investment funds	22	0
Fair Value \| Variable Interest Entities
Available-for-sale securities
Investment funds	$ 561	$ 562
Common Class A
Available-for-sale securities
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock authorized (in shares)	425,000,000	425,000,000
Common stock issued (in shares)	119,510,182	77,319,381
Common stock outstanding (in shares)	119,510,182	77,319,381
Common Class B
Available-for-sale securities
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock authorized (in shares)	325,000,000	325,000,000
Common stock issued (in shares)	70,092,560	111,805,829
Common stock outstanding (in shares)	70,092,560	111,805,829
Common Class M-1
Available-for-sale securities
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock authorized (in shares)	7,109,560	7,109,560
Common stock issued (in shares)	3,388,890	3,474,205
Common stock outstanding (in shares)	3,388,890	3,474,205
Common Class M-2
Available-for-sale securities
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock authorized (in shares)	5,000,000	5,000,000
Common stock issued (in shares)	867,923	1,067,747
Common stock outstanding (in shares)	867,923	1,067,747
Common Class M-3
Available-for-sale securities
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock authorized (in shares)	7,500,000	7,500,000
Common stock issued (in shares)	1,267,000	1,346,300
Common stock outstanding (in shares)	1,267,000	1,346,300
Common Class M-4
Available-for-sale securities
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock authorized (in shares)	7,500,000	7,500,000
Common stock issued (in shares)	4,941,705	5,397,802
Common stock outstanding (in shares)	4,941,705	5,397,802

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