Segment Information (Total Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total assets	$ 885,296	$ 836,781
Separate account assets	317,201	235,393
Separate account liabilities	317,201	235,393
Retail [Member]
Segment Reporting Information [Line Items]
Total assets	349,516	332,387
Separate account assets	172,382	150,513
Separate account liabilities	172,382	150,513
Group, Voluntary & Worksite Benefits [Member]
Segment Reporting Information [Line Items]
Total assets	43,404	44,138
Separate account assets	644	532
Separate account liabilities	644	532
Corporate Benefit Funding [Member]
Segment Reporting Information [Line Items]
Total assets	220,612	217,352
Separate account assets	77,023	71,875
Separate account liabilities	77,023	71,875
Latin America [Member]
Segment Reporting Information [Line Items]
Total assets	69,874	23,272
Separate account assets	49,660	4,200
Separate account liabilities	49,660	4,200
Asia [Member]
Segment Reporting Information [Line Items]
Total assets	119,717	131,138
Separate account assets	8,996	8,273
Separate account liabilities	8,996	8,273
Europe, the Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Total assets	33,382	23,474
Separate account assets	8,496	0
Separate account liabilities	8,496	0
Corporate & Other [Member]
Segment Reporting Information [Line Items]
Total assets	48,791	65,020
Separate account assets	0	0
Separate account liabilities	$ 0	$ 0