Investments in and Advances to Unconsolidated Affiliates - Investments in and Advances to Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Investments in and Advances to Affiliates [Line Items]
Investments in and Advances to Affiliates	$ 69	$ 52
NovaQuest Pharma Opportunities Fund lll, L.P [Member]
Investments in and Advances to Affiliates [Line Items]
Investments in and Advances to Affiliates	43	40
NovaQuest Pharma Opportunities Fund lV, L.P [Member]
Investments in and Advances to Affiliates [Line Items]
Investments in and Advances to Affiliates	6	2
Cenduit TM [Member]
Investments in and Advances to Affiliates [Line Items]
Investments in and Advances to Affiliates	11	9
Other [Member]
Investments in and Advances to Affiliates [Line Items]
Investments in and Advances to Affiliates	$ 9	$ 1

Amount of Equity in net profit and loss for the period. Give totals for each group. If operations of any controlled companies are different in character from those of the company, group such affiliates (1) within divisions and (2) by type of activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column C))
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(6))
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(2))
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

Name:	us-gaap_InvestmentsInAndAdvancesToAffiliatesAmountOfEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant