v3.19.3

Debt (Consolidated Debt) (Details) - USD ($) | Sep. 30, 2019 | Mar. 31, 2019 | Feb. 11, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 4,750,000,000 |  |  | $ 4,300,000,000
Unamortized debt issuance costs | (35,770,000) |  |  | (27,070,000)
Net unamortized premium (discount) | (8,455,000) |  |  | (2,927,000)
Net unamortized amount of gains from historical fair value hedges | 0 |  |  | 866,000
Long-term Debt | 4,705,775,000 |  |  | 4,270,869,000
Current portion of long-term debt, net | 0 |  |  | 59,489,000
Long-term debt, net | 4,705,775,000 |  |  | 4,211,380,000
6.55% Notes due 2019 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 0 |  | $ 550,000,000.0 | 550,000,000
Debt Instrument, Interest Rate, Stated Percentage | 6.55% |  | 6.55% |
4.25% Notes Due 2021 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 550,000,000 |  |  | 550,000,000
Debt Instrument, Interest Rate, Stated Percentage | 4.25% |  |  |
3.20% Notes Due 2025 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 250,000,000 |  |  | 250,000,000
Debt Instrument, Interest Rate, Stated Percentage | 3.20% |  |  |
5.00% Notes Due 2026 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 650,000,000 |  |  | 650,000,000
Debt Instrument, Interest Rate, Stated Percentage | 5.00% |  |  |
6.40% Notes Due 2037 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 250,000,000 |  |  | 250,000,000
Debt Instrument, Interest Rate, Stated Percentage | 6.40% |  |  |
4.20% Notes Due 2042 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 250,000,000 |  |  | 250,000,000
Debt Instrument, Interest Rate, Stated Percentage | 4.20% |  |  |
5.15% Notes Due 2043 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 550,000,000 |  |  | 550,000,000
Debt Instrument, Interest Rate, Stated Percentage | 5.15% |  |  |
4.20% Notes Due 2045 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 250,000,000 |  |  | 250,000,000
Debt Instrument, Interest Rate, Stated Percentage | 4.20% |  |  |
4.25% Notes Due 2046 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 500,000,000 |  |  | 500,000,000
Debt Instrument, Interest Rate, Stated Percentage | 4.25% |  |  |
4.20% Notes Due 2047 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 500,000,000 |  |  | 500,000,000
Debt Instrument, Interest Rate, Stated Percentage | 4.20% |  |  |
4.85% Notes Due 2049 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 500,000,000 | $ 500,000,000.0 |  | 0
Debt Instrument, Interest Rate, Stated Percentage | 4.85% | 4.85% |  |
3.95% Notes Due 2050 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | $ 500,000,000.0 |  |  | $ 0
Debt Instrument, Interest Rate, Stated Percentage | 3.95% |  |  |

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