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v3.21.1

Debt (Schedule of Principal Values, Fair Values, and Carrying Values of Debt) (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 | Jan. 29, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |
Principal Balance | $ 12,134,000,000 |  | $ 11,180,000,000
Fair Value | 12,168,873,000 |  | 11,428,029,000
Carrying Value | 12,043,757,000 |  | 11,095,796,000
Less: current maturities of long-term debt | (24,000,000) |  | (24,000,000)
Total long-term debt, net of current maturities | $ 12,019,757,000 |  | 11,071,796,000
Revolving Credit Facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Apr. 11, 2023 |  |
Principal Balance | $ 590,000,000 |  | 380,000,000
Fair Value | 590,000,000 |  | 380,000,000
Carrying Value | $ 590,000,000 |  | 380,000,000
2018 Term Loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Apr. 11, 2025 |  |
Principal Balance | $ 2,334,000,000 |  | 2,340,000,000
Fair Value | 2,301,908,000 |  | 2,310,750,000
Carrying Value | $ 2,320,200,000 |  | 2,325,391,000
2013-2C Tower Securities [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Apr. 11, 2023 |  |
Principal Balance | $ 575,000,000 |  | 575,000,000
Fair Value | 590,841,000 |  | 599,662,000
Carrying Value | $ 572,370,000 |  | 572,063,000
2014-2C Tower Securities [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Oct. 08, 2024 |  |
Principal Balance | $ 620,000,000 |  | 620,000,000
Fair Value | 655,185,000 |  | 670,003,000
Carrying Value | $ 616,368,000 |  | 616,131,000
2017-1C Tower Securities [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Apr. 11, 2022 |  |
Principal Balance | $ 760,000,000 |  | 760,000,000
Fair Value | 767,532,000 |  | 774,410,000
Carrying Value | $ 757,703,000 |  | 757,165,000
2018-1C Tower Securities [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Mar. 09, 2023 |  |
Principal Balance | $ 640,000,000 |  | 640,000,000
Fair Value | 660,928,000 |  | 671,341,000
Carrying Value | $ 636,481,000 |  | 636,045,000
2019-1C Tower Securities [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Jan. 12, 2025 |  |
Principal Balance | $ 1,165,000,000 |  | 1,165,000,000
Fair Value | 1,192,249,000 |  | 1,218,613,000
Carrying Value | $ 1,155,684,000 |  | 1,155,106,000
2020-1C Tower Securities [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Jan. 09, 2026 |  |
Principal Balance | $ 750,000,000 |  | 750,000,000
Fair Value | 734,505,000 |  | 752,910,000
Carrying Value | $ 743,050,000 |  | 742,782,000
2020-2C Tower Securities [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Jan. 11, 2028 |  |
Principal Balance | $ 600,000,000 |  | 600,000,000
Fair Value | 571,254,000 |  | 597,840,000
Carrying Value | $ 594,215,000 |  | 594,081,000
2016 Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Sep. 01, 2024 |  |
Principal Balance | $ 1,100,000,000 |  | 1,100,000,000
Fair Value | 1,124,871,000 |  | 1,127,500,000
Carrying Value | $ 1,089,616,000 |  | 1,088,924,000
2017 Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Oct. 01, 2022 |  |
Principal Balance |  |  | 750,000,000
Fair Value |  |  | 757,500,000
Carrying Value |  |  | 746,642,000
2020 Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Feb. 15, 2027 |  |
Principal Balance | $ 1,500,000,000 |  | 1,500,000,000
Fair Value | 1,533,975,000 |  | 1,567,500,000
Carrying Value | $ 1,482,131,000 |  | $ 1,481,466,000
2021 Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, maturity date | Feb. 01, 2029 |  |
Principal Balance | $ 1,500,000,000 | $ 1,500,000,000 |
Fair Value | 1,445,625,000 |  |
Carrying Value | $ 1,485,939,000 |  |

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