Amount of debt securities categorized neither as held-to-maturity nor trading.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, acquired in a business combination.

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Subsequent Event Subsequent Event (Details) - USD ($) $ in Millions	1 Months Ended
	Oct. 23, 2017	Sep. 30, 2017	Dec. 31, 2016
Subsequent Event [Line Items]
Payments to Acquire Businesses, Gross	$ 1,500
Available-for-sale Securities, Debt Securities		$ 57,669	$ 56,003
Valuation Allowances and Reserves, Reserves of Businesses Acquired	3,300
Subsequent Event [Member]
Subsequent Event [Line Items]
Available-for-sale Securities, Debt Securities	$ 3,400