Label	Element	Value
Restricted Cash, Noncurrent	us-gaap_RestrictedCashNoncurrent	$ 24,000,000
Restricted Cash, Noncurrent	us-gaap_RestrictedCashNoncurrent	$ 15,000,000
Accounting Standards Update [Extensible List]	us-gaap_AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member
Restricted Cash, Current	us-gaap_RestrictedCashCurrent	$ 2,000,000
Restricted Cash, Current	us-gaap_RestrictedCashCurrent	3,000,000
Business Segment [Member]
Goodwill	us-gaap_Goodwill	12,173,000,000
Small and Medium Business [Member]
Goodwill	us-gaap_Goodwill	(2,808,000,000)
Enterprise [Member]
Goodwill	us-gaap_Goodwill	(4,738,000,000)
International and Global Accounts [Member]
Goodwill	us-gaap_Goodwill	(2,555,000,000)
Consumer [Member]
Goodwill	us-gaap_Goodwill	(5,655,000,000)
Wholesale [Member]
Goodwill	us-gaap_Goodwill	(3,114,000,000)
Mass Market Segment [Member]
Goodwill	us-gaap_Goodwill	$ 6,697,000,000