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Short-Term and Long-Term Debt (Schedule Of Debt) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Debt Instrument [Line Items] |  |  |
Current maturities of long-term debt |  | $ 300 |
Total short-term debt |  | 300 |
Total long-term debt |  | $ 6,067 | $ 5,839
Fixed rate, swap |  | 5.00% |
Debt repurchase option, Repayment as percent of principal |  | 100.00% |
Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes |  | $ 4,614 | 4,473
Capital securities |  | 1,213 | 1,213
Unamortized premiums (discounts) |  | (4) | (3)
Unamortized debt issuance costs |  | (34) | (33)
Unamortized adjustments from discontinued hedges |  | 118 | 123
Fair value hedge on interest rate swap agreements |  | 160 | 66
Total long-term debt |  | $ 6,067 | 5,839
6.25% notes, due 2020 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] |  | 300
Interest rate |  | 6.25% |
4.85% notes, due 2021 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 296 | 300
Interest rate |  | 4.85% |
4.20% notes, due 2022 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 300 | 300
Interest rate |  | 4.20% |
LIBOR +100 bps loan, due 2023 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes |  |  | 200
Variable rate |  | 1.00% |
4.00% notes, due 2023 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 500 | 500
Interest rate |  | 4.00% |
LIBOR + 87.5 bps loan, due 2024 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes |  | $ 250 |
Variable rate |  | 0.875% |
3.35% notes, due 2025 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 300 | 300
Interest rate |  | 3.35% |
3.63% notes, due 2026 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 400 | 400
Interest rate |  | 3.63% |
3.80% notes, due 2028 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 500 | 500
Interest rate |  | 3.80% |
3.05% notes, due 2030 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 500 |
Interest rate |  | 3.05% |
6.15% notes, due 2036 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 243 | 348
Interest rate |  | 6.15% |
6.30% notes, due 2037 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1],[2] | $ 375 | 375
Interest rate |  | 6.30% |
7.00% notes, due 2040 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1],[2] | $ 500 | 500
Interest rate |  | 7.00% |
4.35% notes, due 2048 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Senior Long Term Notes | [1] | $ 450 | 450
Interest rate |  | 4.35% |
LIBOR +236 bps, due 2066 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Capital securities | [3] | $ 722 | 722
Variable rate |  | 2.36% |
LIBOR +204 bps, due 2067 [Member] | Long-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Capital securities | [3] | $ 491 | $ 491
Variable rate |  | 2.04% |
[1] | We have the option to repurchase the outstanding notes by paying the greater of 100% of the principal amount of the notes to be redeemed or the make-whole amount (as defined in each note agreement), plus in each case any accrued and unpaid interest as of the date of redemption.
[2] | Categorized as operating debt for leverage ratio calculations as the proceeds were primarily used as a long-term structured solution to reduce the strain on increasing statutory reserves associated with secondary guarantee UL and term policies.
[3] | To hedge the variability in rates, we purchased interest rate swaps to lock in a fixed rate of approximately 5% over the remaining terms of the capital securities.

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