Commitments and Contingencies (Narrative) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) Lawsuits
Commitments and Contingencies [Abstract]
Other material lawsuits pending | Lawsuits	0
Number of operating lease term extensions	2
Lease renewal term	5 years
Operating leases future minimum payments due	$ 41
Lease incentives	$ 6