Equity-Based Compensation - Schedule of Unrecognized Compensation Cost (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense	$ 14,014
Remaining Weighted- Average Amortization Period (in years)	2 years
Service Vesting RSAs/RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense	$ 8,591
Remaining Weighted- Average Amortization Period (in years)	1 year 9 months 15 days
Performance Vesting RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense	$ 0
Remaining Weighted- Average Amortization Period (in years)	0 years
Market Vesting RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense	$ 5,423
Remaining Weighted- Average Amortization Period (in years)	1 year 9 months 15 days