Commitments and Contingencies (Schedule of Other Long-Term Commitments) (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
Long-term Purchase Commitment [Line Items]
Payments Due by Remainder of Fiscal Year 2013	$ 110
Payments Due by Fiscal Year 2014	375
Payments Due by Fiscal Year 2015	331
Payments Due by Fiscal Year 2016	244
Payments Due by Fiscal Year 2017	216
Payments Due Thereafter	2,799
Payments Due, Total	4,075
Reinforcement Materials [Member]
Long-term Purchase Commitment [Line Items]
Payments Due by Remainder of Fiscal Year 2013	92
Payments Due by Fiscal Year 2014	319
Payments Due by Fiscal Year 2015	285
Payments Due by Fiscal Year 2016	204
Payments Due by Fiscal Year 2017	179
Payments Due Thereafter	2,536
Payments Due, Total	3,615
Performance Materials [Member]
Long-term Purchase Commitment [Line Items]
Payments Due by Remainder of Fiscal Year 2013	11
Payments Due by Fiscal Year 2014	39
Payments Due by Fiscal Year 2015	35
Payments Due by Fiscal Year 2016	32
Payments Due by Fiscal Year 2017	29
Payments Due Thereafter	240
Payments Due, Total	386
Advanced Technologies [Member]
Long-term Purchase Commitment [Line Items]
Payments Due by Remainder of Fiscal Year 2013	1
Payments Due by Fiscal Year 2014	4
Payments Due by Fiscal Year 2015	2
Payments Due, Total	7
Purification Solutions [Member]
Long-term Purchase Commitment [Line Items]
Payments Due by Remainder of Fiscal Year 2013	6
Payments Due by Fiscal Year 2014	13
Payments Due by Fiscal Year 2015	9
Payments Due by Fiscal Year 2016	8
Payments Due by Fiscal Year 2017	8
Payments Due Thereafter	23
Payments Due, Total	$ 67