v3.8.0.1

Fair Value of Assets and Liabilities (Changes in Fair Values Recorded in Earnings for FVO Assets-Liabilities (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Option, Quantitative Disclosures [Line Items]
Interest expense		$ 1,327	$ 1,320	$ 1,306
Commercial mortgage and other loans	[1]	56,045	52,779
Other long-term investments	[1]	12,308	11,283
Commercial mortgage and other loans
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in instrument-specific credit risk		0	0	0
Changes in fair value		0	0	0
Interest Income		13	10	11
Fair value option loans in nonaccrual status		0
Fair value option loans in more than 90 days past due and still accruing		0
Other long-term investments
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in fair value		147	58	2
Notes issued by consolidated VIEs
Fair Value, Option, Quantitative Disclosures [Line Items]
Changes in fair value		4	37	(434)
Interest expense		75	120	$ 351
Fair value option
Fair Value, Option, Quantitative Disclosures [Line Items]
Commercial mortgage and other loans		593	519
Other long-term investments		1,945	1,556
Notes issued by consolidated VIEs		1,196	1,839
Fair value option, aggregate contractual principal
Fair Value, Option, Quantitative Disclosures [Line Items]
Commercial mortgage and other loans		582	508
Notes issued by consolidated VIEs		$ 1,233	$ 1,886
[1] See Note 5 for details of balances associated with variable interest entities.

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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