Subsequent Events Subsequent Events (Details) (Subsequent Event [Member], USD $)	3 Months Ended		3 Months Ended			3 Months Ended
	Dec. 31, 2014	Oct. 31, 2014	Dec. 31, 2014 Level 3 Financing [Member] 2.0 Billion Senior Secured Debt [Member]	Oct. 13, 2014 Level 3 Financing [Member] 2.0 Billion Senior Secured Debt [Member]	Oct. 06, 2014 Level 3 Financing [Member] Senior Notes 6.125percent Due 2021 [Member] [Member]	Dec. 31, 2014 London Interbank Offered Rate (LIBOR) [Member] Level 3 Financing [Member] 2.0 Billion Senior Secured Debt [Member]
Subsequent Event [Line Items]
Business Acquisition, Effective Date of Acquisition	Oct. 31, 2014
Business Acquisition, Share Price		$ 46.91
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		$ 1,793,000,000
Business Combination, Consideration Transferred	8,100,000,000
Debt Instrument, Face Amount				$ 2,000,000,000
Debt Instrument, Upfront Payment as Percentage of Principal Amount			0.75%
Debt Instrument, Description of Variable Rate Basis						LIBOR
Debt Instrument, Basis Spread on Variable Rate						3.50%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum						1.00%
Debt Instrument, Interest Rate, Stated Percentage					6.125%