Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long Term Debt and Other Borrowings - Bridge Facility (Detail) - Bridge Loan - USD ($)	Nov. 10, 2015	Oct. 20, 2015
Senior unsecured bridge loan facility
Short-term Debt [Line Items]
Principal amount		$ 4,200,000,000
Amended and restated term loan agreement
Short-term Debt [Line Items]
Principal amount	$ 900,000,000
Term loan agreement
Short-term Debt [Line Items]
Principal amount	$ 3,300,000,000