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Reclassifications From Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Reclassifications from accumulated other comprehensive (loss) income |  |  |  |
Other, net | $ 51 | $ 5 | $ 54 | $ 4
Tax (benefit) expense | (84) | (90) | (147) | (148)
Net income available to common shareholders | 157 | 148 | 295 | 256
Actuarial losses, net |  |  |  |
Reclassifications from accumulated other comprehensive (loss) income |  |  |  |
Reclassifications, before tax | 5 | 3 | 11 | 8
Amortization of defined benefit pension and other postretirement benefits |  |  |  |
Reclassifications from accumulated other comprehensive (loss) income |  |  |  |
Reclassifications, tax (benefit) | (2) | 0 | (4) | (2)
Reclassifications, after tax | 3 | 3 | 7 | 6
Interest rate swaps | Reclassification from Accumulated Other Comprehensive Loss |  |  |  |
Reclassifications from accumulated other comprehensive (loss) income |  |  |  |
Tax (benefit) expense | (1) | 0 | (1) | 0
Net income available to common shareholders | 2 | 1 | 2 | 1
Interest rate swaps | Interest rate swaps | Reclassification from Accumulated Other Comprehensive Loss |  |  |  |
Reclassifications from accumulated other comprehensive (loss) income |  |  |  |
Interest expense | 3 | 1 | 3 | 1
Available-for-sale securities | Reclassification from Accumulated Other Comprehensive Loss |  |  |  |
Reclassifications from accumulated other comprehensive (loss) income |  |  |  |
Other, net | 0 | (1) | 0 | (1)
Tax (benefit) expense | 0 | 0 | 0 | 0
Net income available to common shareholders | $ 0 | $ (1) | $ 0 | $ (1)

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1377-109256 + Details
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- Definition Amount before tax of reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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