Lease Commitments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Commitments and Contingencies [Line Items]
Years ending December 31, 2014	$ (12)
2015	(9)
2016	(2)
2017
2018
Due after 5 years
Total gross and net lease commitments	(23)
Gross Operating Lease Commitments
Commitments and Contingencies [Line Items]
Years ending December 31, 2014	141
2015	109
2016	69
2017	55
2018	36
Due after 5 years	122
Total gross and net lease commitments	532
Net Operating Lease Commitments
Commitments and Contingencies [Line Items]
Years ending December 31, 2014	129
2015	100
2016	67
2017	55
2018	36
Due after 5 years	122
Total gross and net lease commitments	$ 509