XML 121 R3.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Consolidated Statements of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash flows from operating activities |  |  |
Net Income (Loss) | $ 2,084 | $ 3,876 | $ 1,196
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 5,971 | 5,427 | 5,576
Impairment losses of long-lived assets, intangibles and regulatory assets | 50 | 573 | 306
Gain on deconsolidation of business | 0 | (213) | 0
(Gain) Loss on sales of assets and businesses | (56) | (3) | 48
Bargain purchase gain | 0 | (233) | 0
Deferred income taxes and amortization of investment tax credits | (106) | (362) | 656
Net fair value changes related to derivatives | 294 | 151 | 24
Net realized and unrealized (gains) losses on nuclear decommissioning trust fund investments | 303 | (616) | (229)
Other non-cash operating activities | 1,124 | 721 | 1,333
Changes in assets and liabilities: |  |  |
Accounts receivable | (565) | (470) | (432)
Inventories | (37) | (72) | 7
Accounts payable and accrued expenses | 551 | (388) | 771
Option premiums received (paid), net | (43) | 28 | (66)
Collateral (posted) received, net | 82 | (158) | 931
Income taxes | 340 | 299 | 576
Pension and non-pension postretirement benefit contributions | (383) | (405) | (397)
Deposit with IRS | 0 | 0 | (1,250)
Other assets and liabilities | (965) | (675) | (589)
Net cash flows provided by (used in) operating activities | 8,644 | 7,480 | 8,461
Cash flows from investing activities |  |  |
Capital expenditures | (7,594) | (7,584) | (8,553)
Proceeds from termination of direct financing lease investment | 0 | 0 | 360
Proceeds from nuclear decommissioning trust fund sales | 8,762 | 7,845 | 9,496
Investment in nuclear decommissioning trust funds | (8,997) | (8,113) | (9,738)
Reduction of restricted cash from deconsolidation of business | 0 | (87) | 0
Acquisitions of businesses, net | (154) | (208) | (6,923)
Proceeds from sales of long-lived assets | 91 | 219 | 61
Other investing activities | 58 | (43) | (153)
Net cash flows provided by (used in) investing activities | (7,834) | (7,971) | (15,450)
Cash flows from financing activities |  |  |
Changes in short-term borrowings | (338) | (261) | (353)
Proceeds from short-term borrowings with maturities greater than 90 days | 126 | 621 | 240
Repayments on short-term borrowings with maturities greater than 90 days | (1) | (700) | (462)
Issuance of long-term debt | 3,115 | 3,470 | 4,716
Retirement of long-term debt | (1,786) | (2,490) | (1,936)
Retirement of long-term debt to financing trust | 0 | (250) | 0
Common stock issued from treasury stock | 0 | 1,150 | 0
Redemption of preference stock | 0 | 0 | (190)
Dividends paid on common stock | (1,332) | (1,236) | (1,166)
Proceeds from employee stock plans | 105 | 150 | 55
Sale of noncontrolling interest | 0 | 396 | 372
Other financing activities | (108) | (83) | (85)
Net cash flows provided by (used in) financing activities | (219) | 767 | 1,191
Increase (Decrease) in cash, cash equivalents and restricted cash | 591 | 276 | (5,798)
Cash, cash equivalents, and restricted cash at beginning of period | 1,190 | 914 | 6,712
Cash, cash equivalents, and restricted cash at end of period | 1,781 | 1,190 | 914
Exelon Generation Co L L C [Member] |  |  |
Cash flows from operating activities |  |  |
Net Income (Loss) | 443 | 2,798 | 550
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 3,415 | 3,056 | 3,519
Impairment losses of long-lived assets, intangibles and regulatory assets | 50 | 510 | 243
Gain on deconsolidation of business | 0 | (213) | 0
(Gain) Loss on sales of assets and businesses | (48) | (2) | 59
Bargain purchase gain | 0 | (233) | 0
Deferred income taxes and amortization of investment tax credits | (451) | (2,023) | (277)
Net fair value changes related to derivatives | 307 | 167 | 40
Net realized and unrealized (gains) losses on nuclear decommissioning trust fund investments | 303 | (616) | (229)
Other non-cash operating activities | 298 | 112 | 15
Changes in assets and liabilities: |  |  |
Accounts receivable | (359) | (320) | (152)
Receivables from and payables to affiliates, net | 8 | (7) | (21)
Inventories | (12) | (29) | (4)
Accounts payable and accrued expenses | 376 | 4 | 29
Option premiums received (paid), net | (43) | 28 | (66)
Collateral (posted) received, net | 64 | (129) | 923
Income taxes | (193) | 496 | 182
Pension and non-pension postretirement benefit contributions | (139) | (148) | (152)
Other assets and liabilities | (158) | (152) | (217)
Net cash flows provided by (used in) operating activities | 3,861 | 3,299 | 4,442
Cash flows from investing activities |  |  |
Capital expenditures | (2,242) | (2,259) | (3,078)
Proceeds from nuclear decommissioning trust fund sales | 8,762 | 7,845 | 9,496
Investment in nuclear decommissioning trust funds | (8,997) | (8,113) | (9,738)
Reduction of restricted cash from deconsolidation of business | 0 | (87) | 0
Acquisitions of businesses, net | (154) | (208) | (293)
Proceeds from sales of long-lived assets | 90 | 218 | 37
Other investing activities | 10 | (58) | (240)
Net cash flows provided by (used in) investing activities | (2,531) | (2,662) | (3,816)
Cash flows from financing activities |  |  |
Changes in short-term borrowings | 0 | (620) | 620
Proceeds from short-term borrowings with maturities greater than 90 days | 1 | 121 | 240
Repayments on short-term borrowings with maturities greater than 90 days | (1) | (200) | (162)
Issuance of long-term debt | 15 | 1,645 | 388
Retirement of long-term debt | (141) | (1,261) | (202)
Changes in Exelon intercompany money pool | 46 | (1) | (1,191)
Distributions to member | (1,001) | (659) | (922)
Contributions from member | 155 | 102 | 142
Sale of noncontrolling interest | 0 | 396 | 372
Other financing activities | (55) | (54) | (19)
Net cash flows provided by (used in) financing activities | (981) | (531) | (734)
Increase (Decrease) in cash, cash equivalents and restricted cash | 349 | 106 | (108)
Cash, cash equivalents, and restricted cash at beginning of period | 554 | 448 | 556
Cash, cash equivalents, and restricted cash at end of period | 903 | 554 | 448
Commonwealth Edison Co [Member] |  |  |
Cash flows from operating activities |  |  |
Net Income (Loss) | 664 | 567 | 378
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 940 | 850 | 775
Deferred income taxes and amortization of investment tax credits | 259 | 659 | 439
Other non-cash operating activities | 242 | 164 | 215
Changes in assets and liabilities: |  |  |
Accounts receivable | (136) | (59) | (25)
Receivables from and payables to affiliates, net | 26 | 8 | 3
Inventories | 1 | 4 | 1
Accounts payable and accrued expenses | 70 | (297) | 339
Collateral (posted) received, net | 11 | (26) | 7
Income taxes | 62 | (308) | 306
Pension and non-pension postretirement benefit contributions | (42) | (41) | (38)
Other assets and liabilities | (348) | 6 | 105
Net cash flows provided by (used in) operating activities | 1,749 | 1,527 | 2,505
Cash flows from investing activities |  |  |
Capital expenditures | (2,126) | (2,250) | (2,734)
Other investing activities | 29 | 20 | 49
Net cash flows provided by (used in) investing activities | (2,097) | (2,230) | (2,685)
Cash flows from financing activities |  |  |
Changes in short-term borrowings | 0 | 0 | (294)
Issuance of long-term debt | 1,350 | 1,000 | 1,200
Retirement of long-term debt | (840) | (425) | (665)
Dividends paid on common stock | (459) | (422) | (369)
Contributions from parent | 500 | 651 | 315
Other financing activities | (17) | (15) | (18)
Net cash flows provided by (used in) financing activities | 534 | 789 | 169
Increase (Decrease) in cash, cash equivalents and restricted cash | 186 | 86 | (11)
Cash, cash equivalents, and restricted cash at beginning of period | 144 | 58 | 69
Cash, cash equivalents, and restricted cash at end of period | 330 | 144 | 58
PECO Energy Co [Member] |  |  |
Cash flows from operating activities |  |  |
Net Income (Loss) | 460 | 434 | 438
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 301 | 286 | 270
Deferred income taxes and amortization of investment tax credits | (5) | 19 | 78
Other non-cash operating activities | 51 | 54 | 65
Changes in assets and liabilities: |  |  |
Accounts receivable | (74) | (44) | (71)
Receivables from and payables to affiliates, net | 7 | (6) | 6
Inventories | (14) | 1 | 6
Accounts payable and accrued expenses | (3) | 6 | 67
Income taxes | 15 | 34 | 8
Pension and non-pension postretirement benefit contributions | (28) | (24) | (30)
Other assets and liabilities | 29 | (5) | (8)
Net cash flows provided by (used in) operating activities | 739 | 755 | 829
Cash flows from investing activities |  |  |
Capital expenditures | (849) | (732) | (686)
Changes in Exelon intercompany money pool | 0 | 131 | (131)
Other investing activities | 9 | 4 | 20
Net cash flows provided by (used in) investing activities | (840) | (597) | (797)
Cash flows from financing activities |  |  |
Issuance of long-term debt | 700 | 325 | 300
Retirement of long-term debt | (500) | 0 | (300)
Dividends paid on common stock | (306) | (288) | (277)
Contributions from parent | 89 | 16 | 18
Other financing activities | (22) | (3) | (4)
Net cash flows provided by (used in) financing activities | (39) | 50 | (263)
Increase (Decrease) in cash, cash equivalents and restricted cash | (140) | 208 | (231)
Cash, cash equivalents, and restricted cash at beginning of period | 275 | 67 | 298
Cash, cash equivalents, and restricted cash at end of period | 135 | 275 | 67
Baltimore Gas and Electric Company [Member] |  |  |
Cash flows from operating activities |  |  |
Net Income (Loss) | 313 | 307 | 294
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 483 | 473 | 423
Impairment losses of long-lived assets, intangibles and regulatory assets | 0 | 7 | 52
Deferred income taxes and amortization of investment tax credits | 76 | 145 | 118
Other non-cash operating activities | 58 | 65 | 88
Changes in assets and liabilities: |  |  |
Accounts receivable | 8 | (5) | (98)
Receivables from and payables to affiliates, net | 12 | (4) | 3
Inventories | 2 | (9) | 1
Accounts payable and accrued expenses | (1) | (15) | 138
Collateral (posted) received, net | 4 | 0 | 0
Income taxes | (20) | 60 | 18
Pension and non-pension postretirement benefit contributions | (54) | (53) | (49)
Other assets and liabilities | (92) | (150) | (43)
Net cash flows provided by (used in) operating activities | 789 | 821 | 945
Cash flows from investing activities |  |  |
Capital expenditures | (959) | (882) | (934)
Other investing activities | 9 | 7 | 24
Net cash flows provided by (used in) investing activities | (950) | (875) | (910)
Cash flows from financing activities |  |  |
Changes in short-term borrowings | (42) | 32 | (165)
Issuance of long-term debt | 300 | 300 | 850
Retirement of long-term debt | 0 | (41) | (379)
Retirement of long-term debt to financing trust | 0 | (250) | 0
Redemption of preference stock | 0 | 0 | (190)
Dividends paid on preferred securities | 0 | 0 | (8)
Dividends paid on common stock | (209) | (198) | (179)
Contributions from parent | 109 | 184 | 61
Other financing activities | (2) | (5) | (11)
Net cash flows provided by (used in) financing activities | 156 | 22 | (21)
Increase (Decrease) in cash, cash equivalents and restricted cash | (5) | (32) | 14
Cash, cash equivalents, and restricted cash at beginning of period | 18 | 50 | 36
Cash, cash equivalents, and restricted cash at end of period | 13 | 18 | 50
Pepco Holdings LLC [Member] |  |  |
Cash flows from operating activities |  |  |
Net Income (Loss) | 398 | 362 |
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 740 | 675 |
Impairment losses of long-lived assets, intangibles and regulatory assets | 0 | 52 |
Deferred income taxes and amortization of investment tax credits | 32 | 252 |
Net fair value changes related to derivatives | 0 | 0 |
Other non-cash operating activities | (143) | (58) |
Changes in assets and liabilities: |  |  |
Accounts receivable | 2 | 26 |
Receivables from and payables to affiliates, net | 8 | (2) |
Inventories | 14 | 37 |
Accounts payable and accrued expenses | 45 | (106) |
Income taxes | 34 | 79 |
Pension and non-pension postretirement benefit contributions | 74 | 99 |
Other assets and liabilities | 178 | 258 |
Net cash flows provided by (used in) operating activities | 1,132 | 950 |
Cash flows from investing activities |  |  |
Capital expenditures | (1,375) | (1,396) |
Purchases of investments | 0 | 0 |
Other investing activities | 4 | (1) |
Net cash flows provided by (used in) investing activities | (1,371) | (1,397) |
Cash flows from financing activities |  |  |
Changes in short-term borrowings | (296) | 328 |
Proceeds from short-term borrowings with maturities greater than 90 days | 125 | 0 |
Repayments on short-term borrowings with maturities greater than 90 days | 0 | (500) |
Issuance of long-term debt | 750 | 202 |
Retirement of long-term debt | (299) | (169) |
Changes in Exelon intercompany money pool | 0 | 0 |
Distributions to member | (326) | (311) |
Proceeds from employee stock plans | 0 | 0 |
Contributions from parent | 385 | 758 |
Other financing activities | (9) | (2) |
Net cash flows provided by (used in) financing activities | 330 | 306 |
Increase (Decrease) in cash, cash equivalents and restricted cash | 91 | (141) |
Cash, cash equivalents, and restricted cash at beginning of period | 95 | 236 |
Cash, cash equivalents, and restricted cash at end of period | 186 | 95 | 236
Pepco Holdings LLC [Member] | Predecessor [Member] |  |  |
Cash flows from financing activities |  |  |
Cash, cash equivalents, and restricted cash at beginning of period |  |  | 58
Pepco Holdings LLC [Member] | Successor [Member] |  |  |
Cash flows from financing activities |  |  |
Cash, cash equivalents, and restricted cash at beginning of period |  | 236 |
Cash, cash equivalents, and restricted cash at end of period |  |  | 236
Potomac Electric Power Company [Member] |  |  |
Cash flows from operating activities |  |  |
Net Income (Loss) | 210 | 205 | 42
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 385 | 321 | 295
Impairment losses of long-lived assets, intangibles and regulatory assets | 0 | 14 | 0
Deferred income taxes and amortization of investment tax credits | (18) | 113 | 153
Other non-cash operating activities | 60 | (6) | 175
Changes in assets and liabilities: |  |  |
Accounts receivable | (5) | (20) | (41)
Receivables from and payables to affiliates, net | (17) | 0 | 44
Inventories | (6) | (24) | 1
Accounts payable and accrued expenses | 59 | (63) | 32
Income taxes | (13) | 81 | 110
Pension and non-pension postretirement benefit contributions | (17) | (72) | (32)
Other assets and liabilities | (164) | (142) | (128)
Net cash flows provided by (used in) operating activities | 474 | 407 | 651
Cash flows from investing activities |  |  |
Capital expenditures | (656) | (628) | (586)
Purchases of investments | 0 | 0 | (30)
Other investing activities | 2 | 0 | 0
Net cash flows provided by (used in) investing activities | (654) | (628) | (616)
Cash flows from financing activities |  |  |
Changes in short-term borrowings | 14 | 3 | (41)
Issuance of long-term debt | 200 | 202 | 4
Retirement of long-term debt | (14) | (13) | (11)
Dividends paid on common stock | (169) | (133) | (136)
Contributions from parent | 166 | 161 | 187
Other financing activities | (4) | (1) | (3)
Net cash flows provided by (used in) financing activities | 193 | 219 | 0
Increase (Decrease) in cash, cash equivalents and restricted cash | 13 | (2) | 35
Cash, cash equivalents, and restricted cash at beginning of period | 40 | 42 | 7
Cash, cash equivalents, and restricted cash at end of period | 53 | 40 | 42
Delmarva Power & Light Company [Member] |  |  |
Cash flows from operating activities |  |  |
Net Income (Loss) | 120 | 121 | (9)
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 182 | 167 | 157
Impairment losses of long-lived assets, intangibles and regulatory assets | 0 | 6 | 0
Deferred income taxes and amortization of investment tax credits | 24 | 89 | 109
Other non-cash operating activities | 24 | 9 | 114
Changes in assets and liabilities: |  |  |
Accounts receivable | 8 | (22) | (5)
Receivables from and payables to affiliates, net | (9) | 11 | 13
Inventories | (3) | (5) | 0
Accounts payable and accrued expenses | 11 | (8) | (4)
Collateral (posted) received, net | 0 | 0 | 1
Income taxes | 2 | 26 | 28
Pension and non-pension postretirement benefit contributions | 0 | (2) | (22)
Other assets and liabilities | (7) | (71) | (72)
Net cash flows provided by (used in) operating activities | 352 | 321 | 310
Cash flows from investing activities |  |  |
Capital expenditures | (364) | (428) | (349)
Other investing activities | 2 | (1) | 13
Net cash flows provided by (used in) investing activities | (362) | (429) | (336)
Cash flows from financing activities |  |  |
Changes in short-term borrowings | (216) | 216 | (105)
Issuance of long-term debt | 200 | 0 | 175
Retirement of long-term debt | (4) | (40) | (100)
Dividends paid on common stock | (96) | (112) | (54)
Contributions from parent | 150 | 0 | 152
Other financing activities | (2) | 0 | (1)
Net cash flows provided by (used in) financing activities | 32 | 64 | 67
Increase (Decrease) in cash, cash equivalents and restricted cash | 22 | (44) | 41
Cash, cash equivalents, and restricted cash at beginning of period | 2 | 46 | 5
Cash, cash equivalents, and restricted cash at end of period | 24 | 2 | 46
Atlantic City Electric Company [Member] |  |  |
Cash flows from operating activities |  |  |
Net Income (Loss) | 75 | 77 | (42)
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization | 136 | 146 | 165
Impairment losses of long-lived assets, intangibles and regulatory assets | 0 | 7 | 0
Deferred income taxes and amortization of investment tax credits | 25 | 32 | 22
Other non-cash operating activities | 24 | 17 | 155
Changes in assets and liabilities: |  |  |
Accounts receivable | (8) | 14 | (8)
Receivables from and payables to affiliates, net | 1 | 0 | 13
Inventories | (4) | (7) | (1)
Accounts payable and accrued expenses | (7) | (2) | 9
Income taxes | (2) | (11) | 174
Pension and non-pension postretirement benefit contributions | (6) | (20) | (17)
Other assets and liabilities | (6) | (47) | (85)
Net cash flows provided by (used in) operating activities | 228 | 206 | 385
Cash flows from investing activities |  |  |
Capital expenditures | (335) | (312) | (311)
Other investing activities | 1 | (1) | 4
Net cash flows provided by (used in) investing activities | (334) | (313) | (307)
Cash flows from financing activities |  |  |
Changes in short-term borrowings | (94) | 108 | (5)
Proceeds from short-term borrowings with maturities greater than 90 days | 125 | 0 | 0
Issuance of long-term debt | 350 | 0 | 0
Retirement of long-term debt | (281) | (35) | (48)
Dividends paid on common stock | (59) | (68) | (63)
Contributions from parent | 67 | 0 | 139
Other financing activities | (3) | 0 | (1)
Net cash flows provided by (used in) financing activities | 105 | 5 | 22
Increase (Decrease) in cash, cash equivalents and restricted cash | (1) | (102) | 100
Cash, cash equivalents, and restricted cash at beginning of period | 31 | 133 | 33
Cash, cash equivalents, and restricted cash at end of period | $ 30 | $ 31 | $ 133

X
- Definition The net change in related receivables and payables from entities that are affiliated with the reporting entity by means of direct or indirect ownership. A positive value indicates a decrease in the net receivable or an increase in the net payable, while a negative value indicates an increase in the net receivable or a decrease in the net payable. + References No definition available. + Details
Name: | exc_ChangeReceivablesPayablesFromAffiliates
Namespace Prefix: | exc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net change during the reporting period in option premiums collected and paid. Options reflect the right or obligation to buy or sell an energy-related commodity and are classified in current and long-term mark-to-market derivative assets and liabilities. + References No definition available. + Details
Name: | exc_ChangesInOptionPremiumsCollectedReceived
Namespace Prefix: | exc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6527-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6571-128477 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6387-128476 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6396-128476 + Details
Name: | us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
Name: | us-gaap_CashAcquiredFromAcquisition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906 + Details
Name: | us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 + Details
Name: | us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of the gain (loss) recognized by the parent and included in its attributable portion of net income for the period due to deconsolidation of a subsidiary or derecognition of a group of assets. The gain (loss) recognized and included in the net income attributable to the parent for the period is generally computed as the difference between: (a) the aggregate of: (1) the fair value of any consideration received; (2) the fair value of any retained noncontrolling investment in the former subsidiary at the date the subsidiary was deconsolidated; and (3) the carrying amount of any noncontrolling interest in the former subsidiary (including any accumulated other comprehensive income attributable to the noncontrolling interest) at the date the subsidiary was deconsolidated and (b) the carrying amount of the former subsidiary's assets and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4582445-111684 + Details
Name: | us-gaap_DeconsolidationGainOrLossAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of deferred income tax expense (benefit) and income tax credits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_DeferredIncomeTaxesAndTaxCredits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationAmortizationAndAccretionNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (c)-(e) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c),9(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27405-111563 + Details
Name: | us-gaap_GainLossOnInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value. + References No definition available. + Details
Name: | us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84241808&loc=d3e92212-112881 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2921-110230 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the amount of cash held either as collateral directly or provided to third parties associated with derivative instruments. Upon the occurrence of any specified triggering event or condition associated with the derivative, these amounts can be utilized to recover all or a portion of the amounts due or payable under the derivative. + References No definition available. + Details
Name: | us-gaap_IncreaseDecreaseCashCollateralFromCounterparties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in receivables to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseDueFromAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in current obligations (due within one year or one operating cycle) owed to an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInDueToAffiliatesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInInventories
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncreaseDecreaseInOperatingCapitalAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) of consideration paid in advance for income and other taxes that provide economic benefits in future periods. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInPrepaidTaxes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInReceivables
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInInvestingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInOperatingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_OtherNoncashIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash (inflow) outflow from investing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3098-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3095-108585 + Details
Name: | us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDistributionsToAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDividendsCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cash outflow for purchase of trading, available-for-sale securities and held-to-maturity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireMarketableSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow to acquire investments classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireOtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of payment for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitContributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromContributionsFromAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from parent as a source of financing that is recorded as additional paid in capital. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromContributionsFromParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromMinorityShareholders
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3095-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3098-108585 + Details
Name: | us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from a borrowing net of the cash outflow from repayment of a borrowing having initial term of repayment within three months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3098-108585 + Details
Name: | us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cash inflows (outflows) from issuing and redeeming redeemable preferred stock; includes convertible and nonconvertible redeemable preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_ProceedsFromRepurchaseOfRedeemablePreferredStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the sale or collection of receivables arising from the lease of real estate, equipment or other fixed assets for a specified time in exchange for payment, usually in the form of rent; excludes proceeds from sales-type lease transactions, which are classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleAndCollectionOfLeaseReceivables
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the sale and maturity (principal being due) of other investments, prepayment and call (request of early payment) of other investments not otherwise defined in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleAndMaturityOfOtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfPropertyHeldForSale
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from a borrowing having initial term of repayment of more than three months but less than one year or one operating cycle (if the normal cycle is more than one year). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the amount received from the stock plan during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromStockPlans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591551-111686 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 + Details
Name: | us-gaap_ProfitLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for the payment of a long-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfRelatedPartyDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow from a repayment of a borrowing having initial term of repayment of more than three months but less than one year or one operating cycle (if the normal cycle is more than one year). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_UnrealizedGainLossOnDerivatives
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=exc_ExelonGenerationCoLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=exc_CommonwealthEdisonCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=exc_PecoEnergyCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=exc_BaltimoreGasAndElectricCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=exc_PepcoHoldingsLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_SuccessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=exc_PotomacElectricPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=exc_DelmarvaPowerandLightCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=exc_AtlanticCityElectricCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |