Label	Element	Value
Small and Medium Business [Member]
Goodwill	us-gaap_Goodwill	$ (2,808,000,000)
Enterprise [Member]
Goodwill	us-gaap_Goodwill	(4,738,000,000)
Mass Market Segment [Member]
Goodwill	us-gaap_Goodwill	6,697,000,000
Business Segment [Member]
Goodwill	us-gaap_Goodwill	12,173,000,000
Wholesale [Member]
Goodwill	us-gaap_Goodwill	(3,114,000,000)
Consumer [Member]
Goodwill	us-gaap_Goodwill	(5,655,000,000)
International and Global Accounts [Member]
Goodwill	us-gaap_Goodwill	$ (2,555,000,000)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member]
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]