Geographic Information of Consolidated Net Sales and Long-lived Assets (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 6,617	$ 6,769	$ 7,224
Long-Lived Assets	1,176	1,225	1,239
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	2,760	2,559	2,975
Long-Lived Assets	368	311	300
Other North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	366	399	396
Long-Lived Assets	111	131	138
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	3,126	2,958	3,371
Long-Lived Assets	479	442	438
ITALY
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	703	734	731
Long-Lived Assets	61	71	64
GERMANY
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	429	410	408
Long-Lived Assets	106	124	118
Other Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	846	850	882
Long-Lived Assets	151	161	158
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	1,978	1,994	2,021
Long-Lived Assets	318	356	340
BRAZIL
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	505	639	574
Long-Lived Assets	119	129	136
Other South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	266	344	351
Long-Lived Assets	22	56	73
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	771	983	925
Long-Lived Assets	141	185	209
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	742	834	907
Long-Lived Assets	$ 238	$ 242	$ 252