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Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
OPERATING ACTIVITIES
Net loss	$ 21.8	$ (433.5)
Adjustments to reconcile net income (loss) to net cash used in operating activities of continuing operations:
Gain on bargain purchase	(659.8)	(1.8)
Depreciation	445.9	356.5
(Gain) loss on extinguishment of debt	(194.1)	19.0
Loss on impairment	90.7	0.0
Share-based compensation expense	28.7	21.6
Amortization, net	(18.1)	(30.7)
Contributions to pension plans	(8.0)	0.0
Deferred income tax expense (benefit)	(3.8)	44.9
Contributions to pension plans	(8.0)	0.0
Equity in earnings of ARO	3.1	0.0
Loss from discontinued operations, net	0.0	8.1
Other	13.4	(5.3)
Changes in operating assets and liabilities	(147.3)	(61.0)
Net cash used in operating activities of continuing operations	(427.5)	(82.2)
INVESTING ACTIVITIES
Rowan cash acquired	931.9	0.0
Maturities of short-term investments	474.0	675.0
Additions to property and equipment	(174.2)	(378.7)
Purchases of short-term investments	(145.0)	(669.0)
Other	4.9	10.0
Net cash provided by (used in) investing activities of continuing operations	1,091.6	(362.7)
FINANCING ACTIVITIES
Reduction of long-term borrowings	(928.1)	(771.2)
Borrowings on credit facility	175.0	0.0
Repayments of credit facility borrowings	(34.4)	0.0
Debt solicitation fees	(9.4)	0.0
Cash dividends paid	(4.5)	(13.4)
Proceeds from issuance of senior notes	0.0	1,000.0
Debt issuance costs	0.0	(17.0)
Other	(7.7)	(4.7)
Net cash provided by (used in) financing activities	(809.1)	193.7
Net cash provided by discontinued operations	0.0	2.5
Effect of exchange rate changes on cash and cash equivalents	(0.6)	(0.7)
DECREASE IN CASH AND CASH EQUIVALENTS	(145.6)	(249.4)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	275.1	445.4
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 129.5	$ 196.0

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