Debt (Carrying And Principal Values Of Debt) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jul. 01, 2014	Sep. 28, 2012	Jul. 13, 2012
Debt Instrument [Line Items]
Principal Balance	$ 8,270,000,000	$ 7,870,000,000
Fair Value	8,313,629,000	7,887,202,000
Carrying Value	8,256,400,000	7,860,799,000
Less: current maturities of long-term debt	(40,000,000)	(32,500,000)
Total long-term debt, net of current maturities	8,216,400,000	7,828,299,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal Balance	40,000,000	125,000,000
Fair Value	40,000,000	125,000,000
Carrying Value	$ 40,000,000	125,000,000
Debt instrument, maturity date	Feb. 05, 2020
5.625% Senior Notes [Member]
Debt Instrument [Line Items]
Principal Balance	$ 500,000,000	500,000,000
Fair Value	521,250,000	511,250,000
Carrying Value	$ 500,000,000	500,000,000
Debt instrument, maturity date	Oct. 01, 2019
Debt instrument, interest rate, stated percentage	5.625%			5.625%
5.75% Senior Notes [Member]
Debt Instrument [Line Items]
Principal Balance	$ 800,000,000	800,000,000
Fair Value	830,000,000	816,000,000
Carrying Value	$ 800,000,000	800,000,000
Debt instrument, maturity date	Jul. 15, 2020
Debt instrument, interest rate, stated percentage	5.75%				5.75%
4.875% Senior Notes [Member]
Debt Instrument [Line Items]
Principal Balance	$ 750,000,000	750,000,000
Fair Value	731,250,000	721,875,000
Carrying Value	$ 744,474,000	744,150,000
Debt instrument, maturity date	Jul. 15, 2022
Debt instrument, interest rate, stated percentage	4.875%		4.875%
2010-2C Tower Securities [Member]
Debt Instrument [Line Items]
Principal Balance	$ 550,000,000	550,000,000
Fair Value	568,354,000	576,901,000
Carrying Value	$ 550,000,000	550,000,000
Debt instrument, maturity date	Apr. 17, 2017
2012-1C Tower Securities [Member]
Debt Instrument [Line Items]
Principal Balance	$ 610,000,000	610,000,000
Fair Value	617,832,000	620,175,000
Carrying Value	$ 610,000,000	610,000,000
Debt instrument, maturity date	Dec. 15, 2017
2013-1C Tower Securities
Debt Instrument [Line Items]
Principal Balance	$ 425,000,000	425,000,000
Fair Value	422,935,000	420,776,000
Carrying Value	$ 425,000,000	425,000,000
Debt instrument, maturity date	Apr. 17, 2018
2013-2C Tower Securities
Debt Instrument [Line Items]
Principal Balance	$ 575,000,000	575,000,000
Fair Value	578,853,000	584,344,000
Carrying Value	$ 575,000,000	575,000,000
Debt instrument, maturity date	Apr. 17, 2023
2013-1D Tower Securities
Debt Instrument [Line Items]
Principal Balance	$ 330,000,000	330,000,000
Fair Value	328,112,000	330,551,000
Carrying Value	$ 330,000,000	330,000,000
Debt instrument, maturity date	Apr. 17, 2018
2014-1C Tower Securities
Debt Instrument [Line Items]
Principal Balance	$ 920,000,000	920,000,000
Fair Value	921,122,000	920,515,000
Carrying Value	$ 920,000,000	920,000,000
Debt instrument, maturity date	Oct. 15, 2019
2014-2C Tower Securities
Debt Instrument [Line Items]
Principal Balance	$ 620,000,000	620,000,000
Fair Value	622,765,000	629,474,000
Carrying Value	$ 620,000,000	620,000,000
Debt instrument, maturity date	Oct. 15, 2024
2012-1 Term Loan [Member]
Debt Instrument [Line Items]
Principal Balance	$ 165,000,000	172,500,000
Fair Value	166,650,000	171,422,000
Carrying Value	$ 165,000,000	172,500,000
Debt instrument, maturity date	May 09, 2017
2014 Term Loan [Member]
Debt Instrument [Line Items]
Principal Balance	$ 1,485,000,000	1,492,500,000
Fair Value	1,472,006,000	1,458,919,000
Carrying Value	$ 1,481,891,000	$ 1,489,149,000
Debt instrument, maturity date	Mar. 24, 2021
2015 Term Loan [Member]
Debt Instrument [Line Items]
Principal Balance	$ 500,000,000
Fair Value	492,500,000
Carrying Value	$ 495,035,000
Debt instrument, maturity date	Jun. 10, 2022