Stockholders' Equity - Additional Information (Detail) - USD ($) shares in Millions		12 Months Ended
	Jan. 27, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jan. 24, 2017
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, remaining authorized amount		$ 2,991,600,000
Repurchase of common stock		$ 42,500,000	$ 183,700,000	$ 1,000,000,000
Shares repurchased (shares)		0.1	0.4	2.5
Aggregate reduction in common stock and additional paid-in capital during stock repurchases		$ 4,100,000	$ 16,300,000	$ 89,500,000
Amount charged to retained earnings during stock repurchases		38,400,000	$ 167,400,000	$ 910,500,000
Goldman | ASR Program | Subsequent event
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock	$ 2,000,000,000
Shares repurchased (shares)	2.4
Payment amount divided by closing price, percent	80.00%
Common stock
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount		6,200,000,000.0
Stock repurchase program, increased to authorized amount		$ 3,000,000,000
Common stock | Goldman | ASR Program | Subsequent event
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 2,000,000,000.0