Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Other Liabilities Noncurrent [Abstract]
Unrecognized tax benefits	$ 73	[1]	$ 68	[1]
Construction liabilities	82	[2]	67	[2]
Other	19	[3]	19	[3]
Total other long-term liabilities	$ 174		$ 154

[1] Amount includes accrued interest related to this liability.

[2] We capitalize construction in progress and record a corresponding long-term liability for build-to-suit lease agreements where we are considered the owner during the construction period for accounting purposes only.

[3] Amounts primarily consist of long term deferred rent balances related to operating leases for office space.